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WO2018190617A1 - Procédé et appareil de récupération de faisceau dans un système de communication sans fil - Google Patents

Procédé et appareil de récupération de faisceau dans un système de communication sans fil Download PDF

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Publication number
WO2018190617A1
WO2018190617A1 PCT/KR2018/004198 KR2018004198W WO2018190617A1 WO 2018190617 A1 WO2018190617 A1 WO 2018190617A1 KR 2018004198 W KR2018004198 W KR 2018004198W WO 2018190617 A1 WO2018190617 A1 WO 2018190617A1
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WIPO (PCT)
Prior art keywords
beam failure
resource
recovery request
channel
transmission
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/KR2018/004198
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English (en)
Inventor
Li Guo
Eko Onggosanusi
Md. Saifur RAHMAN
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Samsung Electronics Co Ltd
Original Assignee
Samsung Electronics Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Samsung Electronics Co Ltd filed Critical Samsung Electronics Co Ltd
Priority to KR1020237012538A priority Critical patent/KR102836121B1/ko
Priority to KR1020197033209A priority patent/KR102522645B1/ko
Priority to CN202311302671.9A priority patent/CN117460049A/zh
Priority to CN201880032907.2A priority patent/CN110637496B/zh
Priority to EP18784850.2A priority patent/EP3583814A4/fr
Publication of WO2018190617A1 publication Critical patent/WO2018190617A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0048—Allocation of pilot signals, i.e. of signals known to the receiver
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/06—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
    • H04B7/0613—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission
    • H04B7/0615—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal
    • H04B7/0617—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal for beam forming
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H04W72/044—Wireless resource allocation based on the type of the allocated resource
    • H04W72/046—Wireless resource allocation based on the type of the allocated resource the resource being in the space domain, e.g. beams
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B17/00—Monitoring; Testing
    • H04B17/30—Monitoring; Testing of propagation channels
    • H04B17/309—Measuring or estimating channel quality parameters
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B17/00—Monitoring; Testing
    • H04B17/30—Monitoring; Testing of propagation channels
    • H04B17/309—Measuring or estimating channel quality parameters
    • H04B17/318—Received signal strength
    • H04B17/328—Reference signal received power [RSRP]; Reference signal received quality [RSRQ]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/06—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
    • H04B7/0686—Hybrid systems, i.e. switching and simultaneous transmission
    • H04B7/0695—Hybrid systems, i.e. switching and simultaneous transmission using beam selection
    • H04B7/06952—Selecting one or more beams from a plurality of beams, e.g. beam training, management or sweeping
    • H04B7/06964—Re-selection of one or more beams after beam failure
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/08—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the receiving station
    • H04B7/0868—Hybrid systems, i.e. switching and combining
    • H04B7/088—Hybrid systems, i.e. switching and combining using beam selection
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/0001—Arrangements for dividing the transmission path
    • H04L5/0014—Three-dimensional division
    • H04L5/0023—Time-frequency-space
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0048—Allocation of pilot signals, i.e. of signals known to the receiver
    • H04L5/0051—Allocation of pilot signals, i.e. of signals known to the receiver of dedicated pilots, i.e. pilots destined for a single user or terminal
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0053—Allocation of signalling, i.e. of overhead other than pilot signals
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0078—Timing of allocation
    • H04L5/0085—Timing of allocation when channel conditions change
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W16/00—Network planning, e.g. coverage or traffic planning tools; Network deployment, e.g. resource partitioning or cells structures
    • H04W16/24—Cell structures
    • H04W16/28—Cell structures using beam steering
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W24/00—Supervisory, monitoring or testing arrangements
    • H04W24/08—Testing, supervising or monitoring using real traffic
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/20—Control channels or signalling for resource management
    • H04W72/23—Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W74/00—Wireless channel access
    • H04W74/002—Transmission of channel access control information
    • H04W74/004—Transmission of channel access control information in the uplink, i.e. towards network
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W74/00—Wireless channel access
    • H04W74/002—Transmission of channel access control information
    • H04W74/006—Transmission of channel access control information in the downlink, i.e. towards the terminal
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. Transmission Power Control [TPC] or power classes
    • H04W52/04—Transmission power control [TPC]
    • H04W52/06—TPC algorithms
    • H04W52/14—Separate analysis of uplink or downlink
    • H04W52/146—Uplink power control
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. Transmission Power Control [TPC] or power classes
    • H04W52/04—Transmission power control [TPC]
    • H04W52/18—TPC being performed according to specific parameters
    • H04W52/24—TPC being performed according to specific parameters using SIR [Signal to Interference Ratio] or other wireless path parameters
    • H04W52/242—TPC being performed according to specific parameters using SIR [Signal to Interference Ratio] or other wireless path parameters taking into account path loss
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. Transmission Power Control [TPC] or power classes
    • H04W52/04—Transmission power control [TPC]
    • H04W52/38—TPC being performed in particular situations
    • H04W52/42—TPC being performed in particular situations in systems with time, space, frequency or polarisation diversity
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W84/00—Network topologies
    • H04W84/02—Hierarchically pre-organised networks, e.g. paging networks, cellular networks, WLAN [Wireless Local Area Network] or WLL [Wireless Local Loop]
    • H04W84/04—Large scale networks; Deep hierarchical networks
    • H04W84/042—Public Land Mobile systems, e.g. cellular systems

Definitions

  • the present application relates generally to beam management. More specifically, this disclosure relates to beam recovery scheme in an advanced wireless communication system.
  • the 5G or pre-5G communication system is also called a 'Beyond 4G Network' or a 'Post Long Term Evolution (LTE) System'.
  • the 5G communication system is considered to be implemented in higher frequency (mmWave) bands, e.g., 60GHz bands, so as to accomplish higher data rates.
  • mmWave e.g., 60GHz bands
  • MIMO massive multiple-input multiple-output
  • FD-MIMO Full Dimensional MIMO
  • array antenna an analog beam forming, large scale antenna techniques are discussed in 5G communication systems.
  • RANs Cloud Radio Access Networks
  • D2D device-to-device
  • wireless backhaul moving network
  • cooperative communication Coordinated Multi-Points (CoMP), reception-end interference cancellation and the like.
  • CoMP Coordinated Multi-Points
  • FSK Hybrid frequency shift keying
  • FQAM quadrature amplitude modulation
  • SWSC sliding window superposition coding
  • ACM advanced coding modulation
  • FBMC filter bank multi carrier
  • NOMA non-orthogonal multiple access
  • SCMA sparse code multiple access
  • Embodiments of the present disclosure provide beam recovery scheme in an advanced wireless communication system.
  • a UE for a beam failure recovery in a wireless communication system includes a transceiver configured to receive, from a base station (BS), at least one beam failure detection reference signal (RS) and at least one new candidate beam RS over a downlink channel.
  • the UE further includes a processor operably connected to the transceiver, the processor configured to identify a set of RS resources including an index for the at least one beam failure detection RS, identify a set of RS resources including an index for the at least one new candidate beam RS; and identify a dedicated control-resource set (CORESET) received from the BS for a beam failure recovery request.
  • CORESET dedicated control-resource set
  • the transceiver is further configured to transmit, to the BS, the beam failure recovery request associated with a quality measurement of the at least one beam failure detection RS over a physical random access channel (PRACH) and receive, from the BS, a beam failure response in response to the beam failure recovery request based on the dedicated CORESET indicated to the UE.
  • PRACH physical random access channel
  • a BS for a beam failure recovery in a wireless communication system includes a processor configured to identify a set of reference signal (RS) resources including an index for at least one beam failure detection RS and identify a set of RS resources including an index for at least one new candidate beam RS.
  • RS reference signal
  • the BS further includes a transceiver operably connected to the processor, the transceiver configured to transmit, to a UE, the at least one beam failure detection RS and the at least one new candidate beam RS over a downlink channel, receive, from the UE, a beam failure recovery request associated with a quality measurement of the at least one beam failure detection RS over a PRACH, wherein the processor is further configured to identify a dedicated CORESET for the beam failure recovery request, and transmit, to the UE, a beam failure response in response to the beam failure recovery request based on the dedicated CORESET indicated to the UE.
  • a method for operating the UE or the BS is provided.
  • Embodiments of the present disclosure provide beam recovery scheme in an advanced wireless communication system.
  • FIGURE 1 illustrates an example wireless network according to embodiments of the present disclosure
  • FIGURE 2 illustrates an example eNB according to embodiments of the present disclosure
  • FIGURE 3 illustrates an example UE according to embodiments of the present disclosure
  • FIGURE 4A illustrates a high-level diagram of an orthogonal frequency division multiple access transmit path according to embodiments of the present disclosure
  • FIGURE 4B illustrates a high-level diagram of an orthogonal frequency division multiple access receive path according to embodiments of the present disclosure
  • FIGURE 5 illustrates a transmitter block diagram for a PDSCH in a subframe according to embodiments of the present disclosure
  • FIGURE 6 illustrates a receiver block diagram for a PDSCH in a subframe according to embodiments of the present disclosure
  • FIGURE 7 illustrates a transmitter block diagram for a PUSCH in a subframe according to embodiments of the present disclosure
  • FIGURE 8 illustrates a receiver block diagram for a PUSCH in a subframe according to embodiments of the present disclosure
  • FIGURE 9 illustrates an example multiplexing of two slices according to embodiments of the present disclosure
  • FIGURE 10 illustrates an example antenna blocks according to embodiments of the present disclosure
  • FIGURE 11 illustrates an example UE mobility scenario according to embodiments of the present disclosure
  • FIGURE 12 illustrates an example beam recovery according to embodiments of the present disclosure
  • FIGURE 13A illustrates a flow chart of a procedure for sending beam recovery request according to embodiments of the present disclosure
  • FIGURE 13B illustrates another flow chart of a procedure for sending beam recovery request according to embodiments of the present disclosure
  • FIGURE 14 illustrates a flow chart of a procedure for sending beam recovery request on a first UL channel and a second channel n example according to embodiments of the present disclosure
  • FIGURE 15 illustrates an example use case of a vehicle-centric communication network according to embodiments of the present disclosure
  • FIGURE 16 illustrates an example SL interface according to embodiments of the present disclosure
  • FIGURE 17 illustrates an example resource pool for PSCCH according to embodiments of the present disclosure
  • FIGURE 18 illustrates an example DMRS configuration according to embodiments of the present disclosure
  • FIGURE 19 illustrates another example DMRS configuration according to embodiments of the present disclosure
  • FIGURE 20 illustrates an example PRB configuration according to embodiments of the present disclosure
  • FIGURE 21A illustrates an example DMRS configuration and pre-coder set according to embodiments of the present disclosure
  • FIGURE 21B illustrates another example DMRS configuration and pre-coder set according to embodiments of the present disclosure.
  • FIGURE 21C illustrates yet another example DMRS configuration and pre-coder set according to embodiments of the present disclosure.
  • the present disclosure describes technology for beam recovery in a wireless communication system.
  • a network access and a radio resource management are enabled by physical layer synchronization signals and higher (MAC) layer procedures.
  • RRM radio resource management
  • a user equipment (UE) attempts to detect the presence of synchronization signals along with at least one cell identification (ID) for initial access.
  • ID cell identification
  • the UE monitors several neighboring cells by attempting to detect their synchronization signals and/or measuring the associated cell-specific reference signals (RSs).
  • RSs cell-specific reference signals
  • next generation cellular systems such as third generation partnership-new radio access or interface (3GPP-NR), efficient and unified radio resource acquisition or tracking mechanism which works for various use cases such as enhanced mobile broadband (eMBB), ultra reliable low latency (URLLC), massive machine type communication (mMTC), each corresponding to a different coverage requirement and frequency bands with different propagation losses is desirable.
  • 3GPP-NR third generation partnership-new radio access or interface
  • eMBB enhanced mobile broadband
  • URLLC ultra reliable low latency
  • mMTC massive machine type communication
  • Couple and its derivatives refer to any direct or indirect communication between two or more elements, whether or not those elements are in physical contact with one another.
  • transmit and “communicate,” as well as derivatives thereof, encompass both direct and indirect communication.
  • the term “or” is inclusive, meaning and/or.
  • controller means any device, system or part thereof that controls at least one operation. Such a controller may be implemented in hardware or a combination of hardware and software and/or firmware. The functionality associated with any particular controller may be centralized or distributed, whether locally or remotely.
  • phrases "at least one of,” when used with a list of items, means that different combinations of one or more of the listed items may be used, and only one item in the list may be needed.
  • “at least one of: A, B, and C” includes any of the following combinations: A, B, C, A and B, A and C, B and C, and A and B and C.
  • various functions described below can be implemented or supported by one or more computer programs, each of which is formed from computer readable program code and embodied in a computer readable medium.
  • application and “program” refer to one or more computer programs, software components, sets of instructions, procedures, functions, objects, classes, instances, related data, or a portion thereof adapted for implementation in a suitable computer readable program code.
  • computer readable program code includes any type of computer code, including source code, object code, and executable code.
  • computer readable medium includes any type of medium capable of being accessed by a computer, such as read only memory (ROM), random access memory (RAM), a hard disk drive, a compact disc (CD), a digital video disc (DVD), or any other type of memory.
  • ROM read only memory
  • RAM random access memory
  • CD compact disc
  • DVD digital video disc
  • a "non-transitory” computer readable medium excludes wired, wireless, optical, or other communication links that transport transitory electrical or other signals.
  • a non-transitory computer readable medium includes media where data can be permanently stored and media where data can be stored and later overwritten, such as a rewritable optical disc or an erasable memory device.
  • FIGURES 1 through FIGURE 21C discussed below, and the various embodiments used to describe the principles of the present disclosure in this patent document are by way of illustration only and should not be construed in any way to limit the scope of the disclosure. Those skilled in the art will understand that the principles of the present disclosure may be implemented in any suitably arranged system or device.
  • 3GPP TS 36.211 v14.2.0 “E-UTRA, Physical channels and modulation;” 3GPP TS 36.212 v14.2.0, “E-UTRA, Multiplexing and Channel coding;” 3GPP TS 36.213 v14.2.0, “E-UTRA, Physical Layer Procedures;” 3GPP TS 36.321 v14.2.0, “E-UTRA, Medium Access Control (MAC) protocol specification;” and 3GPP TS 36.331 v14.2.1, "E-UTRA, Radio Resource Control (RRC) protocol specification,” 3GPP TR 22.891 v1.2.0, “Feasibility Study on New Services and Markets Technology Enablers.”
  • RRC Radio Resource Control
  • the 5G or pre-5G communication system is also called a “beyond 4G network" or a "post LTE system.”
  • the 5G communication system is considered to be implemented in higher frequency (mmWave) bands, e.g., 60GHz bands, so as to accomplish higher data rates.
  • mmWave e.g., 60GHz bands
  • MIMO massive multiple-input multiple-output
  • FD-MIMO full dimensional MIMO
  • array antenna an analog beam forming, large scale antenna techniques and the like are discussed in 5G communication systems.
  • RANs cloud radio access networks
  • D2D device-to-device
  • wireless backhaul communication moving network
  • cooperative communication coordinated multi-points (CoMP) transmission and reception, interference mitigation and cancellation and the like.
  • CoMP coordinated multi-points
  • FQAM frequency shift keying and quadrature amplitude modulation
  • SWSC sliding window superposition coding
  • AMC adaptive modulation and coding
  • FBMC filter bank multi carrier
  • NOMA non-orthogonal multiple access
  • SCMA sparse code multiple access
  • FIGURES 1-4B below describe various embodiments implemented in wireless communications systems and with the use of orthogonal frequency division multiplexing (OFDM) or orthogonal frequency division multiple access (OFDMA) communication techniques.
  • OFDM orthogonal frequency division multiplexing
  • OFDMA orthogonal frequency division multiple access
  • FIGURE 1 illustrates an example wireless network according to embodiments of the present disclosure.
  • the embodiment of the wireless network shown in FIGURE 1 is for illustration only. Other embodiments of the wireless network 100 could be used without departing from the scope of this disclosure.
  • the wireless network includes an eNB 101, an eNB 102, and an eNB 103.
  • the eNB 101 communicates with the eNB 102 and the eNB 103.
  • the eNB 101 also communicates with at least one network 130, such as the Internet, a proprietary Internet Protocol (IP) network, or other data network.
  • IP Internet Protocol
  • the eNB 102 provides wireless broadband access to the network 130 for a first plurality of UEs within a coverage area 120 of the eNB 102.
  • the first plurality of UEs includes a UE 111, which may be located in a small business (SB); a UE 112, which may be located in an enterprise (E); a UE 113, which may be located in a WiFi hotspot (HS); a UE 114, which may be located in a first residence (R); a UE 115, which may be located in a second residence (R); and a UE 116, which may be a mobile device (M), such as a cell phone, a wireless laptop, a wireless PDA, or the like.
  • M mobile device
  • the eNB 103 provides wireless broadband access to the network 130 for a second plurality of UEs within a coverage area 125 of the eNB 103.
  • the second plurality of UEs includes the UE 115 and the UE 116.
  • one or more of the eNBs 101-103 may communicate with each other and with the UEs 111-116 using 5G, LTE, LTE-A, WiMAX, WiFi, or other wireless communication techniques.
  • the term “base station” or “BS” can refer to any component (or collection of components) configured to provide wireless access to a network, such as transmit point (TP), transmit-receive point (TRP), an enhanced base station (eNodeB or eNB), a 5G base station (gNB), a macrocell, a femtocell, a WiFi access point (AP), or other wirelessly enabled devices.
  • Base stations may provide wireless access in accordance with one or more wireless communication protocols, e.g., 5G 3GPP new radio interface/access (NR), long term evolution (LTE) , LTE advanced (LTE-A) , high speed packet access (HSPA), Wi-Fi 802.11a/b/g/n/ac, etc.
  • 5G 3GPP new radio interface/access NR
  • LTE long term evolution
  • LTE-A LTE advanced
  • HSPA high speed packet access
  • Wi-Fi 802.11a/b/g/n/ac etc.
  • the terms “BS” and “TRP” are used interchangeably in this patent document to refer to network infrastructure components that provide wireless access to remote terminals.
  • the term “user equipment” or “UE” can refer to any component such as “mobile station,” “subscriber station,” “remote terminal,” “wireless terminal,” “receive point,” or “user device.”
  • the terms “user equipment” and “UE” are used in this patent document to refer to remote wireless equipment that wirelessly accesses a BS, whether the UE is a mobile device (such as a mobile telephone or smartphone) or is normally considered a stationary device (such as a desktop computer or vending machine).
  • Dotted lines show the approximate extents of the coverage areas 120 and 125, which are shown as approximately circular for the purposes of illustration and explanation only. It should be clearly understood that the coverage areas associated with eNBs, such as the coverage areas 120 and 125, may have other shapes, including irregular shapes, depending upon the configuration of the eNBs and variations in the radio environment associated with natural and man-made obstructions.
  • one or more of the UEs 111-116 include circuitry, programing, or a combination thereof, for efficient beam recovery in an advanced wireless communication system.
  • one or more of the eNBs 101-103 includes circuitry, programing, or a combination thereof, for receiving efficient beam recovery in an advanced wireless communication system.
  • FIGURE 1 illustrates one example of a wireless network
  • the wireless network could include any number of eNBs and any number of UEs in any suitable arrangement.
  • the eNB 101 could communicate directly with any number of UEs and provide those UEs with wireless broadband access to the network 130.
  • each eNB 102-103 could communicate directly with the network 130 and provide UEs with direct wireless broadband access to the network 130.
  • the eNBs 101, 102, and/or 103 could provide access to other or additional external networks, such as external telephone networks or other types of data networks.
  • FIGURE 2 illustrates an example eNB 102 according to embodiments of the present disclosure.
  • the embodiment of the eNB 102 illustrated in FIGURE 2 is for illustration only, and the eNBs 101 and 103 of FIGURE 1 could have the same or similar configuration.
  • eNBs come in a wide variety of configurations, and FIGURE 2 does not limit the scope of this disclosure to any particular implementation of an eNB.
  • the eNB 102 includes multiple antennas 205a-205n, multiple RF transceivers 210a-210n, transmit (TX) processing circuitry 215, and receive (RX) processing circuitry 220.
  • the eNB 102 also includes a controller/processor 225, a memory 230, and a backhaul or network interface 235.
  • the RF transceivers 210a-210n receive, from the antennas 205a-205n, incoming RF signals, such as signals transmitted by UEs in the network 100.
  • the RF transceivers 210a-210n down-convert the incoming RF signals to generate IF or baseband signals.
  • the IF or baseband signals are sent to the RX processing circuitry 220, which generates processed baseband signals by filtering, decoding, and/or digitizing the baseband or IF signals.
  • the RX processing circuitry 220 transmits the processed baseband signals to the controller/processor 225 for further processing.
  • the TX processing circuitry 215 receives analog or digital data (such as voice data, web data, e-mail, or interactive video game data) from the controller/processor 225.
  • the TX processing circuitry 215 encodes, multiplexes, and/or digitizes the outgoing baseband data to generate processed baseband or IF signals.
  • the RF transceivers 210a-210n receive the outgoing processed baseband or IF signals from the TX processing circuitry 215 and up-converts the baseband or IF signals to RF signals that are transmitted via the antennas 205a-205n.
  • the controller/processor 225 can include one or more processors or other processing devices that control the overall operation of the eNB 102.
  • the controller/processor 225 could control the reception of forward channel signals and the transmission of reverse channel signals by the RF transceivers 210a-210n, the RX processing circuitry 220, and the TX processing circuitry 215 in accordance with well-known principles.
  • the controller/processor 225 could support additional functions as well, such as more advanced wireless communication functions.
  • the controller/processor 225 could support beam forming or directional routing operations in which outgoing signals from multiple antennas 205a-205n are weighted differently to effectively steer the outgoing signals in a desired direction. Any of a wide variety of other functions could be supported in the eNB 102 by the controller/processor 225.
  • the controller/processor 225 is also capable of executing programs and other processes resident in the memory 230, such as an OS.
  • the controller/processor 225 can move data into or out of the memory 230 as required by an executing process.
  • the controller/processor 225 is also coupled to the backhaul or network interface 235.
  • the backhaul or network interface 235 allows the eNB 102 to communicate with other devices or systems over a backhaul connection or over a network.
  • the interface 235 could support communications over any suitable wired or wireless connection(s). For example, when the eNB 102 is implemented as part of a cellular communication system (such as one supporting 5G, LTE, or LTE-A), the interface 235 could allow the eNB 102 to communicate with other eNBs over a wired or wireless backhaul connection.
  • the interface 235 could allow the eNB 102 to communicate over a wired or wireless local area network or over a wired or wireless connection to a larger network (such as the Internet).
  • the interface 235 includes any suitable structure supporting communications over a wired or wireless connection, such as an Ethernet or RF transceiver.
  • the memory 230 is coupled to the controller/processor 225. Part of the memory 230 could include a RAM, and another part of the memory 230 could include a Flash memory or other ROM.
  • FIGURE 2 illustrates one example of eNB 102
  • the eNB 102 could include any number of each component shown in FIGURE 2.
  • an access point could include a number of interfaces 235, and the controller/processor 225 could support routing functions to route data between different network addresses.
  • the eNB 102 while shown as including a single instance of TX processing circuitry 215 and a single instance of RX processing circuitry 220, the eNB 102 could include multiple instances of each (such as one per RF transceiver).
  • various components in FIGURE 2 could be combined, further subdivided, or omitted and additional components could be added according to particular needs.
  • FIGURE 3 illustrates an example UE 116 according to embodiments of the present disclosure.
  • the embodiment of the UE 116 illustrated in FIGURE 3 is for illustration only, and the UEs 111-115 of FIGURE 1 could have the same or similar configuration.
  • UEs come in a wide variety of configurations, and FIGURE 3 does not limit the scope of this disclosure to any particular implementation of a UE.
  • the UE 116 includes an antenna 305, a radio frequency (RF) transceiver 310, TX processing circuitry 315, a microphone 320, and receive (RX) processing circuitry 325.
  • the UE 116 also includes a speaker 330, a processor 340, an input/output (I/O) interface (IF) 345, a touchscreen 350, a display 355, and a memory 360.
  • the memory 360 includes an operating system (OS) 361 and one or more applications 362.
  • the RF transceiver 310 receives, from the antenna 305, an incoming RF signal transmitted by an eNB of the network 100.
  • the RF transceiver 310 down-converts the incoming RF signal to generate an intermediate frequency (IF) or baseband signal.
  • the IF or baseband signal is sent to the RX processing circuitry 325, which generates a processed baseband signal by filtering, decoding, and/or digitizing the baseband or IF signal.
  • the RX processing circuitry 325 transmits the processed baseband signal to the speaker 330 (such as for voice data) or to the processor 340 for further processing (such as for web browsing data).
  • the TX processing circuitry 315 receives analog or digital voice data from the microphone 320 or other outgoing baseband data (such as web data, e-mail, or interactive video game data) from the processor 340.
  • the TX processing circuitry 315 encodes, multiplexes, and/or digitizes the outgoing baseband data to generate a processed baseband or IF signal.
  • the RF transceiver 310 receives the outgoing processed baseband or IF signal from the TX processing circuitry 315 and up-converts the baseband or IF signal to an RF signal that is transmitted via the antenna 305.
  • the processor 340 can include one or more processors or other processing devices and execute the OS 361 stored in the memory 360 in order to control the overall operation of the UE 116.
  • the processor 340 could control the reception of forward channel signals and the transmission of reverse channel signals by the RF transceiver 310, the RX processing circuitry 325, and the TX processing circuitry 315 in accordance with well-known principles.
  • the processor 340 includes at least one microprocessor or microcontroller.
  • the processor 340 is also capable of executing other processes and programs resident in the memory 360, such as processes for CSI reporting on PUCCH.
  • the processor 340 can move data into or out of the memory 360 as required by an executing process.
  • the processor 340 is configured to execute the applications 362 based on the OS 361 or in response to signals received from eNBs or an operator.
  • the processor 340 is also coupled to the I/O interface 345, which provides the UE 116 with the ability to connect to other devices, such as laptop computers and handheld computers.
  • the I/O interface 345 is the communication path between these accessories and the processor 340.
  • the processor 340 is also coupled to the touchscreen 350 and the display 355.
  • the operator of the UE 116 can use the touchscreen 350 to enter data into the UE 116.
  • the display 355 may be a liquid crystal display, light emitting diode display, or other display capable of rendering text and/or at least limited graphics, such as from web sites.
  • the memory 360 is coupled to the processor 340.
  • Part of the memory 360 could include a random access memory (RAM), and another part of the memory 360 could include a Flash memory or other read-only memory (ROM).
  • RAM random access memory
  • ROM read-only memory
  • FIGURE 3 illustrates one example of UE 116
  • various changes may be made to FIGURE 3.
  • various components in FIGURE 3 could be combined, further subdivided, or omitted and additional components could be added according to particular needs.
  • the processor 340 could be divided into multiple processors, such as one or more central processing units (CPUs) and one or more graphics processing units (GPUs).
  • FIGURE 3 illustrates the UE 116 configured as a mobile telephone or smartphone, UEs could be configured to operate as other types of mobile or stationary devices.
  • FIGURE 4A is a high-level diagram of transmit path circuitry.
  • the transmit path circuitry may be used for an orthogonal frequency division multiple access (OFDMA) communication.
  • FIGURE 4B is a high-level diagram of receive path circuitry.
  • the receive path circuitry may be used for an orthogonal frequency division multiple access (OFDMA) communication.
  • the transmit path circuitry may be implemented in a base station (eNB) 102 or a relay station, and the receive path circuitry may be implemented in a user equipment (e.g. user equipment 116 of FIGURE 1).
  • the receive path circuitry 450 may be implemented in a base station (e.g. eNB 102 of FIGURE 1) or a relay station, and the transmit path circuitry may be implemented in a user equipment (e.g. user equipment 116 of FIGURE 1).
  • Transmit path circuitry comprises channel coding and modulation block 405, serial-to-parallel (S-to-P) block 410, Size N Inverse Fast Fourier Transform (IFFT) block 415, parallel-to-serial (P-to-S) block 420, add cyclic prefix block 425, and up-converter (UC) 430.
  • Receive path circuitry 450 comprises down-converter (DC) 455, remove cyclic prefix block 460, serial-to-parallel (S-to-P) block 465, Size N Fast Fourier Transform (FFT) block 470, parallel-to-serial (P-to-S) block 475, and channel decoding and demodulation block 480.
  • DC down-converter
  • FFT Fast Fourier Transform
  • FIGURES 4A 400 and 4B 450 may be implemented in software, while other components may be implemented by configurable hardware or a mixture of software and configurable hardware.
  • the FFT blocks and the IFFT blocks described in this disclosure document may be implemented as configurable software algorithms, where the value of Size N may be modified according to the implementation.
  • the value of the N variable may be any integer number (i.e., 1, 4, 3, 4, etc.), while for FFT and IFFT functions, the value of the N variable may be any integer number that is a power of two (i.e., 1, 2, 4, 8, 16, etc.).
  • channel coding and modulation block 405 receives a set of information bits, applies coding (e.g., LDPC coding) and modulates (e.g., quadrature phase shift keying (QPSK) or quadrature amplitude modulation (QAM)) the input bits to produce a sequence of frequency-domain modulation symbols.
  • Serial-to-parallel block 410 converts (i.e., de-multiplexes) the serial modulated symbols to parallel data to produce N parallel symbol streams where N is the IFFT/FFT size used in BS 102 and UE 116.
  • Size N IFFT block 415 then performs an IFFT operation on the N parallel symbol streams to produce time-domain output signals.
  • Parallel-to-serial block 420 converts (i.e., multiplexes) the parallel time-domain output symbols from Size N IFFT block 415 to produce a serial time-domain signal.
  • Add cyclic prefix block 425 then inserts a cyclic prefix to the time-domain signal.
  • up-converter 430 modulates (i.e., up-converts) the output of add cyclic prefix block 425 to RF frequency for transmission via a wireless channel.
  • the signal may also be filtered at baseband before conversion to RF frequency.
  • the transmitted RF signal arrives at UE 116 after passing through the wireless channel, and reverse operations to those at eNB 102 are performed.
  • Down-converter 455 down-converts the received signal to baseband frequency
  • remove cyclic prefix block 460 removes the cyclic prefix to produce the serial time-domain baseband signal.
  • Serial-to-parallel block 465 converts the time-domain baseband signal to parallel time-domain signals.
  • Size N FFT block 470 then performs an FFT algorithm to produce N parallel frequency-domain signals.
  • Parallel-to-serial block 475 converts the parallel frequency-domain signals to a sequence of modulated data symbols.
  • Channel decoding and demodulation block 480 demodulates and then decodes the modulated symbols to recover the original input data stream.
  • Each of eNBs 101-103 may implement a transmit path that is analogous to transmitting in the downlink to user equipment 111-116 and may implement a receive path that is analogous to receiving in the uplink from user equipment 111-116.
  • each one of user equipment 111-116 may implement a transmit path corresponding to the architecture for transmitting in the uplink to eNBs 101-103 and may implement a receive path corresponding to the architecture for receiving in the downlink from eNBs 101-103.
  • enhanced mobile broadband eMBB
  • ultra reliable and low latency URLL
  • massive machine type communication mMTC is determined that a number of devices can be as many as 100,000 to 1 million per km2, but the reliability/throughput/latency requirement could be less stringent. This scenario may also involve power efficiency requirement as well, in that the battery consumption should be minimized as possible.
  • a communication system includes a Downlink (DL) that conveys signals from transmission points such as Base Stations (BSs) or NodeBs to User Equipments (UEs) and an Uplink (UL) that conveys signals from UEs to reception points such as NodeBs.
  • BSs Base Stations
  • UEs User Equipments
  • UL Uplink
  • a UE also commonly referred to as a terminal or a mobile station, may be fixed or mobile and may be a cellular phone, a personal computer device, or an automated device.
  • An eNodeB which is generally a fixed station, may also be referred to as an access point or other equivalent terminology. For LTE systems, a NodeB is often referred as an eNodeB.
  • DL signals can include data signals conveying information content, control signals conveying DL control information (DCI), and reference signals (RS) that are also known as pilot signals.
  • DCI DL control information
  • RS reference signals
  • An eNodeB transmits data information through a physical DL shared channel (PDSCH).
  • An eNodeB transmits DCI through a physical DL control channel (PDCCH) or an Enhanced PDCCH (EPDCCH).
  • PDSCH physical DL shared channel
  • EPCCH Enhanced PDCCH
  • An eNodeB transmits acknowledgement information in response to data transport block (TB) transmission from a UE in a physical hybrid ARQ indicator channel (PHICH).
  • An eNodeB transmits one or more of multiple types of RS including a UE-common RS (CRS), a channel state information RS (CSI-RS), or a demodulation RS (DMRS).
  • CRS is transmitted over a DL system bandwidth (BW) and can be used by UEs to obtain a channel estimate to demodulate data or control information or to perform measurements.
  • BW DL system bandwidth
  • an eNodeB may transmit a CSI-RS with a smaller density in the time and/or frequency domain than a CRS.
  • DMRS can be transmitted only in the BW of a respective PDSCH or EPDCCH and a UE can use the DMRS to demodulate data or control information in a PDSCH or an EPDCCH, respectively.
  • a transmission time interval for DL channels is referred to as a subframe and can have, for example, duration of 1 millisecond.
  • DL signals also include transmission of a logical channel that carries system control information.
  • a BCCH is mapped to either a transport channel referred to as a broadcast channel (BCH) when the BCCH conveys a master information block (MIB) or to a DL shared channel (DL-SCH) when the BCCH conveys a system information block (SIB).
  • MIB master information block
  • DL-SCH DL shared channel
  • SIB system information block
  • Most system information is included in different SIBs that are transmitted using DL-SCH.
  • a presence of system information on a DL-SCH in a subframe can be indicated by a transmission of a corresponding PDCCH conveying a codeword with a cyclic redundancy check (CRC) scrambled with special system information RNTI (SI-RNTI).
  • SI-RNTI special system information RNTI
  • SIB-1 scheduling information for the first SIB (SIB-1) can be provided by the MIB.
  • a DL resource allocation is performed in a unit of subframe and a group of physical resource blocks (PRBs).
  • a transmission BW includes frequency resource units referred to as resource blocks (RBs).
  • Each RB includes sub-carriers, or resource elements (REs), such as 12 REs.
  • a unit of one RB over one subframe is referred to as a PRB.
  • a UE can be allocated M PDSC RBs for a total of REs for the PDSCH transmission BW.
  • UL signals can include data signals conveying data information, control signals conveying UL control information (UCI), and UL RS.
  • UL RS includes DMRS and Sounding RS (SRS).
  • a UE transmits DMRS only in a BW of a respective PUSCH or PUCCH.
  • An eNodeB can use a DMRS to demodulate data signals or UCI signals.
  • a UE transmits SRS to provide an eNodeB with an UL CSI.
  • a UE transmits data information or UCI through a respective physical UL shared channel (PUSCH) or a Physical UL control channel (PUCCH). If a UE needs to transmit data information and UCI in a same UL subframe, the UE may multiplex both in a PUSCH.
  • PUSCH physical UL shared channel
  • PUCCH Physical UL control channel
  • UCI includes Hybrid Automatic Repeat request acknowledgement (HARQ-ACK) information, indicating correct (ACK) or incorrect (NACK) detection for a data TB in a PDSCH or absence of a PDCCH detection (DTX), scheduling request (SR) indicating whether a UE has data in the UE's buffer, rank indicator (RI), and channel state information (CSI) enabling an eNodeB to perform link adaptation for PDSCH transmissions to a UE.
  • HARQ-ACK information is also transmitted by a UE in response to a detection of a PDCCH/EPDCCH indicating a release of semi-persistently scheduled PDSCH.
  • An UL subframe includes two slots. Each slot includes symbols for transmitting data information, UCI, DMRS, or SRS.
  • a frequency resource unit of an UL system BW is a RB.
  • a UE is allocated N RB RBs for a total of REs for a transmission BW.
  • N RB 1.
  • a last subframe symbol can be used to multiplex SRS transmissions from one or more UEs.
  • FIGURE 5 illustrates a transmitter block diagram 500 for a PDSCH in a subframe according to embodiments of the present disclosure.
  • the embodiment of the transmitter block diagram 500 illustrated in FIGURE 5 is for illustration only.
  • FIGURE 5 does not limit the scope of this disclosure to any particular implementation of the transmitter block diagram 500.
  • information bits 510 are encoded by encoder 520, such as a turbo encoder, and modulated by modulator 530, for example using quadrature phase shift keying (QPSK) modulation.
  • a serial to parallel (S/P) converter 540 generates M modulation symbols that are subsequently provided to a mapper 550 to be mapped to REs selected by a transmission BW selection unit 555 for an assigned PDSCH transmission BW, unit 560 applies an Inverse fast Fourier transform (IFFT), the output is then serialized by a parallel to serial (P/S) converter 570 to create a time domain signal, filtering is applied by filter 580, and a signal transmitted 590.
  • Additional functionalities such as data scrambling, cyclic prefix insertion, time windowing, interleaving, and others are well known in the art and are not shown for brevity.
  • FIGURE 6 illustrates a receiver block diagram 600 for a PDSCH in a subframe according to embodiments of the present disclosure.
  • the embodiment of the diagram 600 illustrated in FIGURE 6 is for illustration only.
  • FIGURE 6 does not limit the scope of this disclosure to any particular implementation of the diagram 600.
  • a received signal 610 is filtered by filter 620, REs 630 for an assigned reception BW are selected by BW selector 635, unit 640 applies a fast Fourier transform (FFT), and an output is serialized by a parallel-to-serial converter 650.
  • a demodulator 660 coherently demodulates data symbols by applying a channel estimate obtained from a DMRS or a CRS (not shown), and a decoder 670, such as a turbo decoder, decodes the demodulated data to provide an estimate of the information data bits 680. Additional functionalities such as time-windowing, cyclic prefix removal, de-scrambling, channel estimation, and de-interleaving are not shown for brevity.
  • FIGURE 7 illustrates a transmitter block diagram 700 for a PUSCH in a subframe according to embodiments of the present disclosure.
  • the embodiment of the block diagram 700 illustrated in FIGURE 7 is for illustration only.
  • FIGURE 7 does not limit the scope of this disclosure to any particular implementation of the block diagram 700.
  • information data bits 710 are encoded by encoder 720, such as a turbo encoder, and modulated by modulator 730.
  • a discrete Fourier transform (DFT) unit 740 applies a DFT on the modulated data bits, REs 750 corresponding to an assigned PUSCH transmission BW are selected by transmission BW selection unit 755, unit 760 applies an IFFT and, after a cyclic prefix insertion (not shown), filtering is applied by filter 770 and a signal transmitted 780.
  • DFT discrete Fourier transform
  • FIGURE 8 illustrates a receiver block diagram 800 for a PUSCH in a subframe according to embodiments of the present disclosure.
  • the embodiment of the block diagram 800 illustrated in FIGURE 8 is for illustration only.
  • FIGURE 8 does not limit the scope of this disclosure to any particular implementation of the block diagram 800.
  • a received signal 810 is filtered by filter 820. Subsequently, after a cyclic prefix is removed (not shown), unit 830 applies a FFT, REs 840 corresponding to an assigned PUSCH reception BW are selected by a reception BW selector 845, unit 850 applies an inverse DFT (IDFT), a demodulator 860 coherently demodulates data symbols by applying a channel estimate obtained from a DMRS (not shown), a decoder 870, such as a turbo decoder, decodes the demodulated data to provide an estimate of the information data bits 880.
  • a decoder 870 such as a turbo decoder
  • next generation cellular systems various use cases are envisioned beyond the capabilities of LTE system.
  • 5G or the fifth generation cellular system a system capable of operating at sub-6GHz and above-6 GHz (for example, in mmWave regime) becomes one of the requirements.
  • 3GPP TR 22.891 74 5G use cases has been identified and described; those use cases can be roughly categorized into three different groups.
  • a first group is termed 'enhanced mobile broadband' (eMBB), targeted to high data rate services with less stringent latency and reliability requirements.
  • a second group is termed “ultra-reliable and low latency (URLL)” targeted for applications with less stringent data rate requirements, but less tolerant to latency.
  • URLL ultra-reliable and low latency
  • a third group is termed “massive MTC (mMTC)” targeted for large number of low-power device connections such as 1 million per km2 with less stringent the reliability, data rate, and latency requirements.
  • mMTC massive MTC
  • FIGURE 9 illustrates an example multiplexing of two slices 900 according to embodiments of the present disclosure.
  • the embodiment of the multiplexing of two slices 900 illustrated in FIGURE 9 is for illustration only.
  • FIGURE 9 does not limit the scope of this disclosure to any particular implementation of the multiplexing of two slices 900.
  • a slice can be composed of one or two transmission instances where one transmission instance includes a control (CTRL) component (e.g., 920a, 960a, 960b, 920b, or 960c) and a data component (e.g., 930a, 970a, 970b, 930b, or 970c).
  • CTRL control
  • the two slices are multiplexed in frequency domain whereas in embodiment 950, the two slices are multiplexed in time domain.
  • LTE specification supports up to 32 CSI-RS antenna ports which enable an eNB to be equipped with a large number of antenna elements (such as 64 or 128). In this case, a plurality of antenna elements is mapped onto one CSI-RS port. For next generation cellular systems such as 5G, the maximum number of CSI-RS ports can either remain the same or increase.
  • FIGURE 10 illustrates an example antenna blocks 1000 according to embodiments of the present disclosure.
  • the embodiment of the antenna blocks 1000 illustrated in FIGURE 10 is for illustration only.
  • FIGURE 10 does not limit the scope of this disclosure to any particular implementation of the antenna blocks 1000.
  • the number of CSI-RS ports - which can correspond to the number of digitally precoded ports - tends to be limited due to hardware constraints (such as the feasibility to install a large number of ADCs/DACs at mmWave frequencies) as illustrated in FIGURE 10.
  • one CSI-RS port is mapped onto a large number of antenna elements which can be controlled by a bank of analog phase shifters.
  • One CSI-RS port can then correspond to one sub-array which produces a narrow analog beam through analog beamforming. This analog beam can be configured to sweep across a wider range of angles by varying the phase shifter bank across symbols or subframes.
  • the number of sub-arrays (equal to the number of RF chains) is the same as the number of CSI-RS ports NCSI-PORT.
  • a digital beamforming unit performs a linear combination across NCSI-PORT analog beams to further increase precoding gain. While analog beams are wideband (hence not frequency-selective), digital precoding can be varied across frequency sub-bands or resource blocks.
  • RRM radio resource management
  • MAC physical layer synchronization signals and higher (MAC) layer procedures.
  • a UE attempts to detect the presence of synchronization signals along with at least one cell ID for initial access. Once the UE is in the network and associated with a serving cell, the UE monitors several neighboring cells by attempting to detect their synchronization signals and/or measuring the associated cell-specific RSs (for instance, by measuring their RSRPs).
  • next generation cellular systems such as 3GPP NR (new radio access or interface)
  • 3GPP NR new radio access or interface
  • efficient and unified radio resource acquisition or tracking mechanism which works for various use cases (such as eMBB, URLLC, mMTC, each corresponding to a different coverage requirement) and frequency bands (with different propagation losses) is desirable.
  • seamless and low-latency RRM is also desirable.
  • Such goals pose at least the following problems in designing an access, radio resource, and mobility management framework.
  • NR since NR is likely to support even more diversified network topology, the notion of cell can be redefined or replaced with another radio resource entity.
  • one cell can be associated with a plurality of TRPs (transmit-receive points) similar to a COMP (coordinated multipoint transmission) scenario in LTE specification.
  • TRPs transmit-receive points
  • COMP coordinated multipoint transmission
  • radio resource in terms of beams can be a natural approach.
  • an access, radio resource, and mobility management framework which accommodates various beamforming architectures (or, instead, agnostic to beamforming architecture) is desirable.
  • FIGURE 11 illustrates an example UE mobility scenario 1100 according to embodiments of the present disclosure.
  • the embodiment of the UE mobility scenario 1100 illustrated in FIGURE 11 is for illustration only.
  • FIGURE 11 does not limit the scope of this disclosure to any particular implementation of the UE mobility scenario 1100.
  • the framework may be applicable for or agnostic to whether one beam is formed for one CSI-RS port (for instance, where a plurality of analog ports are connected to one digital port, and a plurality of widely separated digital ports are utilized) or one beam is formed by a plurality of CSI-RS ports.
  • the framework may be applicable whether beam sweeping (as illustrated in FIGURE 11) is used or not.
  • FIGURE 11 A UE-centric access which utilizes two levels of radio resource entity is described in FIGURE 11. These two levels can be termed as “cell” and “beam”. These two terms are exemplary and used for illustrative purposes. Other terms such as radio resource (RR) 1 and 2 can also be used. Additionally, the term "beam” as a radio resource unit is to be differentiated with, for instance, an analog beam used for beam sweeping in FIGURE 10.
  • the first RR level applies when a UE enters a network and therefore is engaged in an initial access procedure.
  • a UE 1111 is connected to cell 1112 after performing an initial access procedure which includes detecting the presence of synchronization signals. Synchronization signals can be used for coarse timing and frequency acquisitions as well as detecting the cell identification (cell ID) associated with the serving cell.
  • the UE observes cell boundaries as different cells can be associated with different cell IDs.
  • one cell is associated with one TRP (in general, one cell can be associated with a plurality of TRPs). Since cell ID is a MAC layer entity, initial access involves not only physical layer procedure(s) (such as cell search via synchronization signal acquisition) but also MAC layer procedure(s).
  • the second RR level (termed “beam”) applies when a UE is already connected to a cell and hence in the network.
  • a UE 1111 can move within the network without observing cell boundaries as illustrated in FIGURE 11.That is, UE mobility is handled on beam level rather than cell level, where one cell can be associated with N beams (N can be 1 or >1). Unlike cell, however, beam is a physical layer entity. Therefore, UE mobility management is handled solely on physical layer.
  • An example of UE mobility scenario based on the second level RR is given in FIGURE 11.
  • the UE 1111 is further associated with beam 1151. This is achieved by acquiring a beam or radio resource (RR) acquisition signal from which the UE can acquire a beam identity or identification.
  • An example of beam or RR acquisition signal is a measurement reference signal (RS).
  • RS measurement reference signal
  • the UE 1111 can report a status to the network or an associated TRP. Examples of such report include a measured beam power (or measurement RS power) or a set of at least one recommended "beam identity (ID)" or "RR-ID”. Based on this report, the network or the associated TRP can assign a beam (as a radio resource) to the UE 1111 for data and control transmission.
  • the UE 1111 When the UE 1111 moves to another cell, the boundary between the previous and the next cells is neither observed nor visible to the UE 1111. Instead of cell handover, the UE 1111 switches from beam 1151 to beam 1152. Such a seamless mobility is facilitated by the report from UE 711 to the network or associated TRP - especially when the UE 1111 reports a set of M>1 preferred beam identities by acquiring and measuring M beam (or RR) acquisition signals.
  • a "beam” can correspond to an RS resource or one port in RS or one port + one time unit in RS, whether the beam is a sounding reference signal (SRS), CSI-RS, beam RS, measurement RS, or any other type of RS.
  • SRS sounding reference signal
  • CSI-RS CSI-RS
  • beam RS measurement RS
  • the TRP and the UE can be deployed with large number of antennas to relay on the high gain beamforming to defeat the large path loss and signal blockage.
  • a general system configuration is that the TRP and UE have large number antenna but only one or a few TXRUs. So hybrid beamforming mechanism is utilized. Analog beams with different direction can be formulated on the antenna array that is connected to one TXRU. To get the best link quality and coverage distance, the TRP and UE need to align the analog beam directions for each particular downlink and uplink transmission.
  • the UE when a UE detects a beam failure event, the UE can be requested to transmit beam recovery request and then monitor for the beam recovery response from a TRP. If no proper response for the beam recovery request is received within configured time duration T 0 , the UE can be configured to re-send the beam recovery request until a proper beam recovery response is received by the UE or the maximal number of beam recovery request transmission is achieved.
  • FIGURE 12 illustrates an example beam recovery 1200 according to embodiments of the present disclosure.
  • the embodiment of the beam recovery 1200 illustrated in FIGURE 12 is for illustration only.
  • FIGURE 12 does not limit the scope of this disclosure to any particular implementation
  • a UE can transmit beam recovery request 1201 in slot n 1210. After sending the beam recovery request 1201 in slot n 1210, the UE can be requested to monitor the gNB response during a configured beam recovery response window 1220.
  • the beam recovery response window can be N slot or T milliseconds that can be configured by the NW.
  • the UE does not receive any proper beam recovery response during time window 1220. Then the UE can re-send the beam recovery request after the time window 1220.
  • the UE sends beam recovery request 1202 in slot m 1211 and monitors the beam recovery response after sending beam recovery request 1202. Within the time window 1221, the UE receives a beam recovery response 1203 in slot l 1212.
  • the UE can be configured with one or more of the following parameters by the NW.
  • a length of time window to monitor the beam recovery response from a gNB It can be a number of slot, N. It can be a length of time in milliseconds.
  • the UE can be requested to monitor and receive beam recovery response within the configured time window after sending a beam recovery request. It can be signaled through system information, high layer signaling (e.g., RRC), MAC-CE or L1 signaling.
  • a default value for the length of time window can be specified in the specification.
  • the NW can signal a new value e.g., through system information, high layer signaling, MAC-CE or L1 signaling to override the default value.
  • a maximum number of beam recovery request transmission M max .
  • the UE can be requested to transmit the beam recovery request message for up to M max times for a beam failure event. It can be signaled through system information, high layer signaling (e.g., RRC), MAC-CE or L1 signaling.
  • a default value for the length of time window can be specified in the specification.
  • the NW can signal a new value e.g., through system information, high layer signaling, MAC-CE or L1 signaling to override the default value.
  • a second timer for the UE to transmit and re-transmit beam failure recovery request. If a second timer expires and the UE does not receive any NW response to the beam failure recovery request, the UE can be requested to abort the beam failure recovery request transmission.
  • FIGURE 13A illustrates a flow chart of a procedure 1300 for sending beam recovery request according to embodiments of the present disclosure.
  • the embodiment of the procedure 1300 illustrated in FIGURE 13A is for illustration only.
  • FIGURE 13A does not limit the scope of this disclosure to any particular implementation.
  • the UE can be configured with both maximum number of beam failure recovery request and a second timer.
  • the UE can re-transmit the beam failure recovery request (if no NW response to any beam failure recovery request is received) until maximum number is achieved or a second timer expires.
  • the UE can be configured with maximum number of beam failure recovery request.
  • the UE can re-transmit the beam failure recovery request (if no NW response to any beam failure recovery request is received) until maximum number is achieved.
  • the UE can be configured with a second timer.
  • the UE can re-transmit the beam failure recovery request (if no NW response to any beam failure recovery request is received) until a second timer expires.
  • a TRP configures by high layers a UE with a time window length (e.g., N slots, T 0 milliseconds) within which the UE can be requested to monitor the beam recovery response from the NW after sending a beam recovery request at step 1310.
  • a TRP configures by high layers a UE with a maximum number beam recovery request transmission, T 0 , that indicates the maximal times a UE can send the beam recovery request after a beam failure event is detected at step 1310.
  • the UE detects the beam failure event as configured by the NW at step 1320.
  • the UE can determine to transmit beam recovery request and initiate the number of beam recovery request transmission to zero at step 1320.
  • the UE sends a beam recovery request in a configured UL channel and then increases the number of beam recovery request by one at step 1330. Then the UE begins to monitor the beam recovery response from the NW.
  • the UE does not receive any beam recovery response within the configured time window (e.g., N slots, T 0 milliseconds) in step 1340, the UE can check if the number of beam recovery request transmission has achieved the configured transmission number limit M max .
  • the UE can re-send the beam recovery request on a configured UL channel and then increase the number of beam recovery request transmission by one in step 1330.
  • the UE can abort the beam recovery request transmission and operates the configured operations, e.g., initiating the RLF (radio link failure) procedure.
  • the UE receives any beam recovery response within the configured time window (e.g., N slots, T 0 milliseconds) after sending one beam recovery request in step 1340, the UE can abort the beam recovery request transmission and operate accordingly based on the received beam recovery response, e.g., switching the beam to a indicated new beam, reporting a beam state information in a scheduled UL transmission, measuring some RS for beam management as configured.
  • FIGURE 13B illustrates another flow chart of a procedure 1305 for sending beam recovery request according to embodiments of the present disclosure.
  • the embodiment of the procedure 1305 illustrated in FIGURE 13B is for illustration only.
  • FIGURE 13B does not limit the scope of this disclosure to any particular implementation.
  • the UE can be configured to continue monitoring the beam failure detection RS to assess if a beam failure trigger condition is met or not when the UE sends beam recovery request and monitors beam recovery response as shown in FIGURE 13B.
  • the UE keeps monitoring the beam failure RS to access the beam failure trigger condition in step 1380 after the UE sends beam recovery request in step 1330.
  • the UE can abort the beam recovery request transmission in step 1390.
  • the UE can be requested to monitor a beam failure detection RS and measure the RSRP of some configured beam covered in the beam failure RS to assess if a beam failure trigger condition is met.
  • the UE can be requested to measure the RSRP of NR-SSS in one indicated NR-SS block.
  • the gNB can configure a UE with one or more of the followings: the index of one NR-SS block, i; a RSRP threshold; a time duration T 1 ; and a number of measurement on NR-SS block, N 1 .
  • the UE can be requested to measure the L1-RSRP of NR-SSS in the indicated NR-SS block index.
  • L1-RSRP of NR-SSS of all NR-SS block index i within the time unit T 1 is less than a configured RSRP threshold
  • the UE can declare beam failure trigger condition is met.
  • L1-RSRP of NR-SSS of all NR-SS block index i within N 1 consecutive NR-SS block burst sets is less than a configured RSRP threshold
  • the UE can declare beam failure trigger condition is met.
  • mean of L1-RSRP of NR-SSS of all NR-SS block index i within the time unit T 1 is less than a configured RSRP threshold
  • the UE can declare beam failure trigger condition is met.
  • the UE when the mean L1-RSRP of NR-SSS of all NR-SS block index i within N 1 consecutive NR-SS block burst sets is less than a configured RSRP threshold, the UE can declare beam failure trigger condition is met. In one example, when median of L1-RSRP of NR-SSS of all NR-SS block index i within the time unit T 1 is less than a configured RSRP threshold, the UE can declare beam failure trigger condition is met. In one example, when the median L1-RSRP of NR-SSS of all NR-SS block index i within N 1 consecutive NR-SS block burst sets is less than a configured RSRP threshold, the UE can declare beam failure trigger condition is met.
  • the UE can be requested to measure the L1-RSRP of NR-PBCH signal in one indicated NR-SS block i and apply the above embodiments to declare the beam failure event.
  • the UE can be requested to measure the L1-RSRP of DMRS for NR-PBCH signal in one indicated NR-SS block i and apply the above methods to declare the beam failure event.
  • the UE can be requested to measure the sum L1-RSRP of NR-SSS and NR-PBCH signal in one indicated NR-SS block i and apply the above methods to declare the beam failure event.
  • the beam recovery request signal can include one or more of the following component.
  • the beam recovery request signal can include one bit information to indicate that beam failure is detected; information to indicate that TRP Tx beam is failed; information to indicate that UE Rx beam is failed.
  • the beam recovery request signal can include information to indicate if a new candidate TRP Tx beam is determined by the UE.
  • the beam recovery request signal can include a TRP Tx beam recommended by the UE. It can be a NR-SS block index. It can be a CSI-RS resource ID. It can be a ⁇ CSI-RS resource ID, CSI-RS antenna port ID or CSI-RS antenna port ID set index ⁇ .
  • the beam recovery request signal can include a request from the UE to request UL assignment for a beam reporting; a request from the UE to request the gNB to trigger aperiodic CSI-RS transmission to allow the UE to refine Rx beams.
  • the beam recovery request signal can include UE's identity. It can be UE's RNTI. It can be implicitly indicated through the UL resource assigned to a UE to transmit beam recovery request. It can be jointly indicated through the UL resource assignment and signal scramble sequence.
  • the UE can assume to expect one or more of the following messages after sending a beam recovery request.
  • the beam recovery response is signaling indicating the UE to switch the beam of control channel to a new beam.
  • the signaling can be RRC signaling, MAC-CE or L1 DCI signaling in common control channel.
  • the beam recovery response is that the UE decodes DCI in control channel by assuming the gNB uses the recommended beam in the beam recovery request message within the configured time window.
  • the beam recovery response is a dedicated acknowledge message transmitted in DCI or MAC-CE to inform the UE that the beam recovery request is received successfully by the NW.
  • the beam recovery response is that the UE receives a UL NR-PUSCH assignment.
  • the beam recovery response is that the UE receives the trigger message of aperiodic CSI-RS transmission or semi-persistent transmission.
  • a UE can be configured with a signal sequence and a UL channel.
  • the UE can be request to send the configured signal sequence on the configured UL channel when beam recovery request trigger condition is met.
  • the UE can be configured to receive a DCI scrambled with this UE's RNTI within N slots. If no DCI scrambled with this UE's RNTI is received within N slots, the UE can re-send the configured signal sequence.
  • a UE can be configured to monitor M ⁇ 1 BPLs (beam pair links) on the PDCCH.
  • Each BPL corresponds to a pair of one TRP Tx beam and one UE Rx beam. Based on BPL identification, the UE can calculate the Rx beam that may be used to buffer one PDCCH.
  • the UE can be configured with M ⁇ 1 BPLs at a slot-level or OFDM symbol-level. If at slot-level, the UE can be configured with different BPLs at different slots. If at OFDM symbol-level, the UE can be configured with different BPL at different OFDM symbols in the PDCCH region at one slot.
  • the UE When the UE is configured with M ⁇ 1 BPLs to monitor the PDCCH, the UE can be requested to transmit beam failure recovery request message if some condition is met.
  • the condition can be one of more of the followings.
  • the condition can be the L1 RSRP measurement of all M configured BPL is below a configured RSRP threshold for configured time duration, e.g., N slots and a new candidate beam is identified.
  • the condition can be out of configured M ⁇ 1 BPLs, one BPL is defined as the primary BPL.
  • the L1 RSRP measurement of primary BPL is below a configured RSRP threshold for configured time duration and new candidate beam is identified.
  • condition can be the L1 RSRP measurement of primary BPL is below a configured RSRP threshold for configured time duration.
  • the condition can be the L1 RSRP measurement of one or more but ⁇ M BPLs is below a configured RSRP threshold for a configured time duration.
  • the UE can be configured with an L1 RSRP threshold and time duration for each BPL separately.
  • the UE can be configured to monitor the L1 RSRP of all M configured BPL.
  • the UE can be requested to monitor the L1 RSRP of one or more than one CSI-RS resources in a periodic CSI-RS or semi-persistent CSI-RS transmission.
  • the TRP can signal a subset of CSI-RS resource indices or the index of CSI-RS resource ports/CSI-RS resource indices and the UE can be requested to monitor the L1 RSRP of those CSI-RS resources or CSI-RS resource ports.
  • the TRP can signal a subset of SS-block time indices and the UE can be requested to monitor the L1 RSRP of signals in those SS-blocks.
  • the signals in SS blocks can be NR-SSS, NR-PBCH, DMRS to NR-PBCH or the combination of these signals.
  • the UE can be requested to monitor the corresponding CSI-RS resource, CSI-RS ports or SS-block when the UE is configured with one BPL to monitor the PDCCH.
  • the UE can be requested to calculate the corresponding CSI-RS resource, CSI-RS ports or SS block for each configured BPL and then monitor the L1 RSRP.
  • the RS resource corresponding to one configured BPL is updated, the UE can be requested to monitor the new RS resource.
  • the UE can be requested to calculate the Tx power of beam recovery request based on the path loss measured from the selected new candidate beam.
  • the Tx power can be calculated by: .
  • the path loss PL c,k can be measured from the RS that carries the new candidate beam selected by the UE.
  • the parameters Po and ⁇ can be configured specifically for beam recovery request by the NW.
  • the parameters Po and ⁇ can be re-used of the parameters for PUSCH,SRS, PUCCH or PRACH transmission.
  • the UE can increase the Tx power of beam recovery request transmission in the re-transmission of beam recovery request.
  • the UE may re-calculate the Tx power if the UE changes the selection of new candidate beam in the re-transmission of beam recovery request.
  • the UE can be configured to trigger an event report if one or more but not all of those M configured BPLs have L1 RSRP being below some configured threshold for configured time duration.
  • the UE can report an event in PUCCH and the message can include one or more of the followings: an indication of some BPL(s) is failed; and the identification information of one or more BPLs.
  • the UE After sending the event report, the UE can be requested to monitor the rest of BPL for the event response from the TRP.
  • a UE can be configured to measure the beam quality of one configured periodic RS resource and reports the measurement results to upper layer.
  • a UE can be configured with a first beam quality threshold, a second beam quality threshold, a first beam quality measurement time duration, and a second beam quality measurement time duration.
  • a UE can be configured with a first beam quality threshold, a number threshold and a RS resource (e.g., one CSI-RS resource, one NR-SS block index, one CSI-RS resource + port index).
  • the UE can be configured to measure the L1 RSRP or L1 RSRQ of each RS resource transmission and then compare the L1 RSRP or L1 RSRQ with the configured first beam quality threshold. If the measured L1 RSRP or L1 RSRQ is below the first beam quality threshold, the UE can report a beam-link-out-of-sync event to the upper layer.
  • the UE can declare the beam failure is detected on configured RS resource. If the configured RS resource is NR-SS block, the UE can be configured to measure the L1-RSRP or L1-RSRQ from NR-SSS signal in the configured NR-SS block, or NR-SSS and DMRS for PBCH in the configured NR-SS block.
  • the UE can be configured to measure the L1-RSRP or L1-RSRQ of a first antenna port in the configured CSI-RS resource and the UE can be configured to measure more than one or all antenna ports in CSI-RS resource and then sum or average the L1-RSRP of those antenna ports.
  • the UE can be configured to measure the SINR-like or CQI-like metric on configured RS resource.
  • the UE can be configured to measure the SINR-like or CQI-like metric by assuming one PDCCH signal is transmitted on the time-frequency resource used by the configured RS resource.
  • the UE can be configured with the transmit power offset between the PDCCH signal and the configured RS resource.
  • the UE can be requested to measure the SINR-like or CQI-like by applying the transmit power offset and also the transmit scheme assumed for the PDCCH channel.
  • the UE can be requested to measure the SINR-like or CQI-like metric of each RS resource transmission instance and then compare the SINR-like/CQI-like metric with a first beam quality. If the SINR-like/CQI-like metric is below a first beam quality, the UE can report beam-link-out-of-sync event to the upper layer. In one example, if the number of consecutive beam-link-out-of-sync events is above a number threshold, the UE can declare the beam failure is detected on configured RS resource.
  • the UE can be requested to assume the configured RS to estimate the channel by assuming the configured RS as DMRS to measure the SINR-like metric or CQI-like metric. If the RS has more antenna ports than the DMRS of corresponding PDCCH, the UE can be configured to assume some precoding is applied to the configured RS first before the UE measure the CQI-like or SINR-like metric.
  • the UE can be configured with two number thresholds: a first number threshold and a second number threshold.
  • the UE can declare the beam failure if the number beam-link-out-of-sync is above a first number threshold within the latest a second number threshold L1 metric measurement reporting from L1.
  • the UE can be configured with a third number threshold and a ratio threshold.
  • the UE can declare the beam failure if the ratio of beam-link-out-of-sync is above a ratio threshold within the latest a third number threshold L1 metric measurement reporting from L1.
  • the UE can be configured to monitor the beam quality of multiple RS resources. In one example, the UE can be configured to measure the beam quality of each CSI-RS resources of multiple indicated CSI-RS resource. In one example the UE can configured to measure the beam quality of each NR-SS block of multiple indicated NR-SS blocks.
  • the UE can be configured with a first beam quality threshold (e.g., L1 RSRP value, L1 RSRQ value, SINR, CQI) for each indicated RS resource. Then the UE can be configured to measure the beam quality (as configured) of each transmission instance of each indicates RS resource and then compare each measured beam quality with the corresponding configured a first beam quality threshold. If one measured beam quality is below the configured a first beam quality threshold, a beam-link-out-sync event can be claimed for that RS resource.
  • the UE can also be configured with a threshold for event number for each of indicated RS resource. If the number of consecutive beam-link-out-sync is larger than the configured threshold for event number, the corresponding RS resource (and corresponding) can be declared as beam failure.
  • the UE can be configured with one a first beam quality threshold and a threshold for event number that are used for all indicated RS resources.
  • one UE can be configured with one or more RS resource indices the UE to measure and monitor the beam failure for one or more BPL (beam pair link) for PDCCH.
  • the PDCCH can be UE-specific PDCCH.
  • the PDCCH can be UE-group-common PDCCH.
  • the UE can be configured with one or more than one CSI-RS resource indicators and also the mapping between indicated CSI-RS resource indicators and the BPLs used for PDCCH transmission. If the UE declare the beam quality of one CSI-RS resource is failed, the UE can assume the beam failure event of the corresponding BPL has occurred.
  • the UE can be configured with one or more than one NR-SS block indicators and also the mapping between indicated NR-SS block indicators and the BPLs used for PDCCH transmission. If the UE declares the beam quality of one NR-SS block is failed, the UE can assume the beam failure event of the corresponding BPL has occurred.
  • the UE can be configured with one or more than one NR-SS block indicators and one or more CSI-RS resource indicators and also the mapping between indicated NR-SS block indicators/CSI-RS resource indicators and the BPLs used for PDCCH transmission. If the UE declare the beam quality of one NR-SS block/CSI-RS resource is failed, the UE can assume the beam failure event of the corresponding BPL has occurred.
  • the aforementioned information of embodiments can be signaled by RRC signaling, MAC-CE signaling or DCI signaling.
  • the UE can be requested to calculate the CSI-RS resource indicator, CSI-RS resource/port index or NR-SS block index based on the configured BPLs for monitoring PDCCH transmission.
  • the UE can be configured with one or more BPLs for PDCCH transmission, The UE can be requested to calculate the RS resource index based on each configured BPL and then monitor the calculated RS resources for the beam failure event of corresponding BPL.
  • the UE can be requested to calculate the RS resource index based on the configured BPLs for monitoring PDCCH transmission.
  • the UE can also be configured to monitor the beam failure event for a subset of the configured BPLs.
  • a UE can be configured to identify one or more new candidate beam from a configured RS setting.
  • the UE can be configured with: a set of RS resources: a set of multiple periodic CSI-RS resources (e.g., a set of multiple NR-SS blocks); a first beam quality threshold (e.g., can be threshold for L1 RSRP, L1 RSRQ, SINR, CQI, and CSI); and/or a threshold for measurement number (e.g., a number of measurement, a metric of time, for example milliseconds).
  • a first beam quality threshold e.g., can be threshold for L1 RSRP, L1 RSRQ, SINR, CQI, and CSI
  • a threshold for measurement number e.g., a number of measurement, a metric of time, for example milliseconds.
  • a UE can be configured with a first beam quality threshold, a number threshold and a RS resource (e.g., one CSI-RS resource, one NR-SS block index, one CSI-RS resource + port index).
  • the UE can be configured to measure the L1 RSRP or L1 RSRQ of each RS resource transmission and then compare the L1 RSRP or L1 RSRQ with the configured first beam quality threshold. If one measured L1 RSRP or L1 RSRQ is above the first beam quality threshold, the UE can report a beam-candidate event to the upper layer.
  • the UE can declare a new candidate beam is detected on configured RS resource. If the configured RS resource is NR-SS block, the UE can be configured to measure the L1-RSRP or L1-RSRQ from NR-SSS signal in the configured NR-SS block, or NR-SSS and DMRS for PBCH in the configured NR-SS block.
  • the UE can be configured to measure the L1-RSRP or L1-RSRQ of a first antenna port in the configured CSI-RS resource and the UE can be configured to measure more than one or all antenna ports in CSI-RS resource and then sum or average the L1-RSRP of those antenna ports.
  • the UE can be configured to measure the SINR-like or CQI-like metric on configured RS resource.
  • the UE can be configured to measure the SINR-like or CQI-like metric by assuming one PDCCH signal is transmitted on the time-frequency resource used by the configured RS resource.
  • the UE can be configured with the transmit power offset between the PDCCH signal and the configured RS resource.
  • the UE can be requested to measure the SINR-like or CQI-like by applying the transmit power offset and also the transmit scheme assumed for the PDCCH channel.
  • the UE can be requested to measure the SINR-like or CQI-like metric of each RS resource transmission instance and then compare the SINR-like/CQI-like metric with a first beam quality. If the SINR-like/CQI-like metric is above a first beam quality, the UE can report beam-candidate event to the upper layer.
  • the UE can declare a new candidate beam is detected on that RS resource.
  • the UE can be requested to assume the configured RS to estimate the channel by assuming the configured RS as DMRS to measure the SINR-like metric or CQI-like metric. If the RS has more antenna ports than the DMRS of corresponding PDCCH, the UE can be configured to assume some precoding is applied to the configured RS first before the UE measure the CQI-like or SINR-like metric.
  • the UE can be configured with two number thresholds: a first number threshold and a second number threshold.
  • the UE can declare a new candidate beam if the number of beam-candidate is above a first number threshold within the latest a second number threshold L1 metric measurement reporting from L1.
  • the UE can be configured with a third number threshold and a ratio threshold.
  • the UE can declare a new candidate beam if the ratio of beam-candidate is above a ratio threshold within the latest a third number threshold L1 metric measurement reporting from L1.
  • a UE can be requested to measure RS resource transmission and claim beam failure according one or more of the following embodiments.
  • the UE can be requested to measure the L1-RSRP or L1-RSRQ of each RS transmission instance of all N consecutive RS transmission instances (during one indicated time duration).
  • the UE can compare the L1-RSRP or L1-RSRQ of each RS transmission instance with a configured threshold.
  • the UE can claim the beam failure of beam that is associated with the measured RS resource if the L1-RSRP or L1-RSRQ of all N RS transmission instances is below the configured threshold.
  • the UE can be requested to measure the L1-RSRP or L1-RSRQ of each RS transmission instance of all N consecutive RS transmission instances (during one indicated time duration).
  • the UE can compare the L1-RSRP or L1-RSRQ of each RS transmission instance with a configured threshold.
  • the UE can claim the beam failure of beam that is associated with the measured RS resource if the mean or median of L1-RSRP or L1-RSRQ of all N RS transmission instances is below the configured threshold.
  • the UE can be requested to measure the L1-RSRP or L1-RSRQ of each RS transmission instance of all N consecutive RS transmission instances (during one indicated time duration).
  • the UE can compare the L1-RSRP or L1-RSRQ of each RS transmission instance with a configured threshold.
  • the UE can claim the beam failure of beam that is associated with the measured RS resource if the percentage of RS transmission instance whose L1-RSRP or L1-RSRQ is below the configured threshold is above some configured percentage threshold.
  • the UE can be requested to measure the SINR or CQI of each RS transmission instance of all N consecutive RS transmission instances (during one indicated time duration).
  • the UE can compare the SINR or CQI of each RS transmission instance with a configured threshold.
  • the UE can claim the beam failure of beam that is associated with the measured RS resource if the SINR or CQI of all N RS transmission instances is below the configured threshold.
  • the UE can be requested to measure the SINR or CQI of each RS transmission instance of all N consecutive RS transmission instances (during one indicated time duration).
  • the UE can compare the SINR or CQI of each RS transmission instance with a configured threshold.
  • the UE can claim the beam failure of beam that is associated with the measured RS resource if the mean or median of SINR or CQI of all N RS transmission instances is below the configured threshold.
  • the UE can be requested to measure the SINR or CQI of each RS transmission instance of all N consecutive RS transmission instances (during one indicated time duration).
  • the UE can compare the SINR or CQI of each RS transmission instance with a configured threshold.
  • the UE can claim the beam failure of beam that is associated with the measured RS resource if the percentage of RS transmission instance whose SINR or CQI is below the configured threshold is above some configured percentage threshold.
  • a UE can be configured to measure one RS resource transmission for the beam failure detection of BPL (beam pair link) that is configured for PDCCH transmission.
  • the UE can be requested to use the same Rx beam to measure the beam quality of one RS resource transmission as the Rx beam used to receive the PDCCH that is configured with the BPL associating with the configured RS resource transmission.
  • the UE can be configured with RS resource for beam failure detection through an implicit method.
  • a UE can be configured with one BPL or spatial quasi co-located (QCL) assumption information for one or more CORESET of PDCCH.
  • the UE can be requested to calculate the Rx beam that may be used to receive the corresponding CORESET based on indicated BPL or spatial QCL assumption.
  • the UE can also be requested to calculate the index of one RS resource that corresponds to the BPL or spatial QCL assumption.
  • the RS resource used for beam failure detection is CSI-RS resource.
  • the RS resource used for beam failure detection is NR-SS block.
  • the UE can be requested to calculate the index of one RS resource that corresponds to one indicated BPL or spatial QCL assumption information and then begin to measure/monitor the transmission instance of calculated RS resource based on one or more of the method described above.
  • the UE can be configured with one RS resource for beam failure detection for one indicated BPL for PDCCH transmission through an explicit method.
  • the UE can be configured with one CSI-RS resource or one NR-SS block index and the UE can be requested to use measure the quality of configured CSI-RS resource or NR-SS block for the first configured BPL for PDCCH.
  • the UE can be configured with one or more CSI-RS resources or NR-SS block indices and a tag index for each configured RS resource.
  • the UE can be requested to calculate the BPL index or corresponding spatial QCL assumption based on each indicated tag index and then the UE can be requested to measure each configured RS resource for the beam failure detection for the BPL or spatial QCL assumption corresponding to the tag index associated with that RS resource.
  • the UE can measure and monitor each configured RS resource for the beam failure detection for corresponding BPL according to one or more of method described above.
  • the UE can be configured with spatial QCL configuration for UE-specific PDCCH by signaling one or more transmission configuration indication (TCI) state(s).
  • TCI transmission configuration indication
  • the UE can be configured with a TCI state for each CORESET.
  • the UE can be configured with TCI state for each search space.
  • the UE can be configured with one or more than one TCI states for UE-specific PDCCH.
  • the UE can be configured to declare beam failure if all the configured TCI states are failed.
  • the UE can be configured to detect the failure of each TCI state as follows.
  • one TCI state can be configured for one or more CORSET (or search space).
  • the UE can be requested to calculate the ID of DL RS that is used for the purpose of spatial QCL.
  • the DL RS can be SSB (SS block), CSI-RS (periodic, semi-persistent, or aperiodic).
  • the UE can be requested to monitor the calculated DL RS to detect the beam failure of TCI state j.
  • the UE can be requested to use the methods described in this disclosure to measure the calculate DL RS and the detect beam failure.
  • the UE can be configured with M TCI states ⁇ a 1 ,a 2 ,...,a M ⁇ for spatial QCL for UE-specific PDCCH.
  • the UE can be configured with a index of DL RS and that DL RS resource can be configured to be associated with TCI state a i , and the UE can be requested to measure/monitor this DL RS resource to detect the beam failure of TCI state a i .
  • Such association configuration can be signaled/configured through high layer signaling, MAC-CE and/or physical layer signaling (e.g., DCI).
  • a UE can be configured to use one or more CSI-RS resource and/or NR-SS blocks to identify new beam candidate and the UE can recommend the identified new beam candidate to the TRP when beam failure is detected.
  • the UE can be requested to measure the L1-RSRP or L1-RSRQ of transmission instances of each CSI-RS resource or NR-SS block in the configured CSI-RS resource/NR-SS blocks for new beam identification.
  • the UE can assume one CSI-RS or NR-SS block as new beam candidate if one or more of the following conditions are met.
  • the mean or median L1-RSRP or L1-RSRQ of one CSI-RS resource transmission instances or NR-SS block transmission instances is above some configured threshold.
  • the L1-RSRP or L1-RSRQ of all N consecutive transmission instances of one CSI-RS resource or NR-SS block (or within one time window duration) is above some configured threshold.
  • the percentage of transmission instances of all N consecutive transmission instances of one CSI-RS resource or NR-SS block (or within one time window duration) whose L1-RSRP or L1-RSRQ being above some configured threshold is above some configured percentage threshold.
  • the UE can be requested to measure the SINR or CQI of transmission instances of each CSI-RS resource or NR-SS block in the configured CSI-RS resource/NR-SS blocks for new beam identification.
  • the UE can assume one CSI-RS or NR-SS block as new beam candidate if one or more of the following conditions are met.
  • the mean or median SINR or CQI of one CSI-RS resource transmission instances or NR-SS block transmission instances is above some configured threshold.
  • the SINR or CQI of all N consecutive transmission instances of one CSI-RS resource or NR-SS block (or within one time window duration) is above some configured threshold.
  • the percentage of transmission instances of all N consecutive transmission instances of one CSI-RS resource or NR-SS block (or within one time window duration) whose SINR or CQI being above some configured threshold is above some configured percentage threshold.
  • the UE can be requested to select the dedicated UL channel resource for beam recovery request transmission if one of the associated CSI-RS resources (or SSBs) meet the new beam identification condition. If more than one CSI-RS resources (or SSBs) are associated with the same dedicated UL channel resource as configuration to the UE, the UE can be requested to select that dedicated UL channel resource for beam recovery request transmission if the averaged RSRP/CQI/SINR of all the associated CSI-RS resources (or SSBs) meet the new beam identification condition.
  • the UE can be requested to select that dedicated UL channel resource for beam recovery request transmission if the CSI-RS resource (SSB) with lowest (or highest) index among all associated CSI-RS resources (or SSBs) meets the new beam identification condition.
  • the UE can be configured with both a set of CSI-RS resources and a set of SS blocks (SSB) to identify the new candidate beam for beam recovery request.
  • SSB SS blocks
  • One-bit field in high layer signaling can be used to indicate the UE that SS blocks are configured for new candidate beam identification.
  • the UE can be requested to use the configuration of actually transmitted SSBs signaling by RMSI and/or RRC signaling.
  • the UE can choose that UL channel resource for beam recovery request transmission only if both a first CSI-RS resource and a second SSB can meet the new candidate beam selection condition. If a first CSI-RS resource and a second SSB are associated with the same dedicated UL channel resource, the UE can choose that UL channel resource for beam recovery request transmission only if the UE can identify both a first CSI-RS resource and a second SSB as a new beam.
  • the UE can assume there is an error case and ignore the association between a first CSI-RS resource and a third UL channel resource but only assume the association between a second SSB and a third UL channel resource.
  • a CSI-RS resource index a and a SSB index b are included in Candidate-Beam-RS-List.
  • a CSI-RS resource index is spatial QCLed with SSB index b.
  • SSB index b is associated with a first PRACH resource in the configuration for beam failure recovery configuration.
  • the UE can choose a first PRACH resource for beam failure recovery request transmission (i.e. link reconfiguration request transmission) if the L1-RSRP measured from SSB index b meets the new candidate beam identification condition or if the L1-RSRP of both SSB index b and CSI-RS a meet the new candidate beam identification.
  • a UE can be configured with a CORESET that is dedicated for monitoring gNB's response to beam failure recovery request.
  • the UE can be configured with a first CORESET and a second set of CORESETs.
  • the UE can be requested to monitor the CORESETS in a second set of CORESET for normal downlink and uplink transmission.
  • the UE can be requested to monitor a first CORESET for the response to beam failure recovery request.
  • the response from NW to the beam failure recovery request can be implicit and/or explicit.
  • the response from NW can be implicitly indicated by that a DCI (or control singling message) is correctly decoded by the UE in a first CORESET.
  • the UE can be configured to claim that a response from NW for the beam failure recovery request is correctly received if a DCI is correctly decoded by the UE in a first CORESET.
  • one or more of the following can be considered as NW response to the beam failure recovery request.
  • one special DCI type is considered to indicate the NW response to the beam failure recovery request.
  • the DCI is scrambled by a special RNTI, e.g., BR-RNTI BFR-RNTI. That special RNTI can be configured UE-specifically or cell-specially or pre-configured.
  • the value of one bit field in DCI is considered to indicate the NW response to the beam failure recovery request.
  • the presence/absence of one bit field in DCI is considered to indicate the NW response to the beam failure recovery request.
  • a dedicated NW response message is transmitted in PDSCH scheduled by the DCI sent in a first CORESET.
  • the UE when a new BPL (e.g., a Tx beam) is indicated in beam failure recovery request, the UE can be requested to monitor a first CORESET by assuming the DMRS in a first CORESET is spatial QCLed to the new BPL indicated in beam failure recovery request.
  • a new BPL e.g., a Tx beam
  • the UE can begin to monitor a first CORESET that is dedicatedly configured for gNB response for beam failure recovery request.
  • the UE can assume to stop monitoring a first CORESET after a valid DCI scrambled by this UE's C-RNTI is correctly received in a first CORESET.
  • one gNB can signal one MAC-CE to indicate the UE to stop monitoring a first CORESET and after receiving that MAC-CE, the UE can assume to stop monitoring a first CORESET.
  • one UE sends one beam failure recovery request at slot n. The UE can begin to monitor a first CORESET at slot n+offset.
  • the UE receives a MAC-CE or high layer signaling to indicate the UE to stop monitoring a first CORESET. Then the UE stops monitoring a first CORESET and the UE can resume monitoring a first CORESET after a new beam failure recovery request is sent.
  • the UE can begin to monitor a first CORESET that is dedicated configured for gNB response to the beam failure recovery request.
  • the UE can stop monitoring a first CORESET after the UE has received signaling from the gNB to configure the spatial QCL assumption for all the PDCCH which is included for beam failure recovery request.
  • one UE is configured with K PDCCHs. The UE detects the beams of all K PDCCH are failed so the UE transmit a beam failure recovery request at slot n.
  • the UE can begin to monitor a first CORESET at slot n+offset.
  • the UE can receive the MAC-CE or high layer signaling to configure or indicate the spatial QCL reference for one or more of those K PDCCHs. After the UE receives the signaling to configure or indicate the spatial QCL reference for all those K PDCCHs, the UE can stop monitoring a first CORESET and the UE can assume monitoring a first CORESET after a new beam failure recovery request is sent.
  • a UE can be configured with multiple BPL to monitor the PDCCH.
  • the UE can indicate the event of beam failure and the index of BPLs that were detected beam failure (for example, the UE can use a bitmap to indicate the beam failure of each BPL. Each bit in the bitmap corresponds to one configured BPL and the value of that bit being 1 (or 0) can indicate the corresponding BPL is detected beam failure).
  • the UE can monitor a first CORESET by assuming the DMRS in a first CORESET can be spatial QCLed to one of the unfailed BPLs.
  • the UE can assume the DMRS in a first CORESET can be spatial QCLed to the BPL that is not failed and has the lowest index among all the unfailed BPLs. In one example, the UE can assume the DMRS in a first CORESET can be spatial QCLed to the BPL that is not failed and has the largest index among all the unfailed BPLs.
  • the UE can be requested to monitor one or more of the configured CORESET that is configured to normal downlink and uplink transmission for NW response to the beam failure recovery request.
  • the UE can be configured with one or more CORESET ⁇ c1, c2,..., cL ⁇ and with one single BPL for PDCCH. Then the UE may monitor all the configured CORESETs with the same configured BPL. If that BPL is detected beam failure, the UE can be requested to monitor one or more of configured CORESETs ⁇ c1, c2,..., cL ⁇ for NW response. The UE can assume the DMRS of monitored CORESETS chosen among ⁇ c1, c2,..., cL ⁇ is spatial QCLed to the new Tx beam indicated by beam failure recovery request.
  • the UE can be requested to monitor all the configured CORESET ⁇ c1, c2,..., cL ⁇ . In one example, the UE can be requested to monitor a subset of configured CORESETs ⁇ c1, c2,..., cL ⁇ . In one example, the UE can be requested to monitor one particular from the configured CORESETs ⁇ c1,c2,...,cL ⁇ .
  • the UE can be configured with one or more CORESET ⁇ c1, c2,..., cL ⁇ and with multiple BPLs for PDCCH. Then the UE may monitor all the configured CORESETs with the same or different configured BPLs. If all the BPLs are detected beam failure, the UE can be requested to monitor one or more of configured CORESETs ⁇ c1, c2,..., cL ⁇ for NW response. The UE can assume the DMRS of monitored CORESETS chosen among ⁇ c1, c2,..., cL ⁇ is spatial QCLed to the new Tx beam indicated by beam failure recovery request.
  • the UE can be requested to monitor all the configured CORESET ⁇ c1, c2,..., cL ⁇ . In one example, the UE can be requested to monitor a subset of configured CORESETs ⁇ c1, c2,..., cL ⁇ . In one example, the UE can be requested to monitor one particular from the configured CORESETs ⁇ c1, c2,..., cL ⁇ .
  • the UE can be configured with one or more CORESET ⁇ c1, c2,..., cL ⁇ and with multiple BPLs for PDCCH. Then the UE may monitor all the configured CORESETs with the same or different configured BPLs. If not all the BPLs are detected beam failure but only a subset of configured BPLs are detected beam failure, the UE can be requested to monitor one or more of configured CORESETs ⁇ c1, c2,..., cL ⁇ for NW response. In one example, the UE can be requested to monitor those CORESETs whose corresponding configured BPL are not detected beam failure for NW response. The UE can assume that the DMRS of those CORESETs are still spatial QCLed to the corresponding configured BPL.
  • the UE can be requested to monitor only one CORESET among the CORESETs whose corresponding configured BPL are not detected beam failure. In one example, the UE can be requested to monitor a subset of those CORESETs whose corresponding configured BPL are not detected beam failure.
  • the UE can be requested to expect only fall back DCIs in the control resource configured through higher layer parameter Beam-failure-recovery-Response-CORESET.
  • the fall back DCI can be UL DCI format 0_0 and DL DCI format 1_0.
  • the UE can be configured to assume only particular DCI format(s) are transmitted in the control resource configured through higher layer parameter Beam-failure-recovery-Response-CORESET. In one example, the UE can be configured to assume only DCI format 0_0 and DCI format 1_0 are transmitted in control resource configured through higher layer parameter Beam-failure-recovery-Response-CORESET.
  • the UE can be requested to monitor some of those old CORESETs or monitor only particular DCI format in those old CORESETs.
  • the UE can be requested to assume such behavior on those old CORESET until (1) the TCI state used as QCL reference for those CORESET are re-configured and (2) control resource set(s) are re-configured.
  • One or more of the following embodiments can be used for UE to monitor those old CORESETs after receiving gNB response.
  • a UE can be configured with a few control resource sets ⁇ CORESET1, CORESET2, ... ⁇ for monitoring PDCCH.
  • the UE detects beam failure on those control resource sets ⁇ CORESET1, CORESET2, ... ⁇
  • the UE can start the beam failure recovery procedure.
  • the UE After the UE receives valid a DCI formats with CRC scrambled by C-RNTI through monitoring PDCCH in the control resource configured by higher layer parameter Beam-failure-recovery-Response-CORESET, the UE can be requested to monitor DCI format 1_0 and 0_0 in the PDCCH in control resource sets ⁇ CORESET1, CORESET2, ... ⁇ .
  • a UE can be configured with a few control resource sets ⁇ CORESET1, CORESET2, ... ⁇ for monitoring PDCCH.
  • the UE detects beam failure on those control resource sets ⁇ CORESET1, CORESET2, ... ⁇ , the UE can start the beam failure recovery procedure.
  • the UE After the UE receives valid a DCI formats with CRC scrambled by C-RNTI through monitoring PDCCH in the control resource configured by higher layer parameter Beam-failure-recovery-Response-CORESET, the UE can be requested to only monitor PDCCH in one control sets of those old control resource sets ⁇ CORESET1, CORESET2, ... ⁇ .
  • the UE can be requested to only monitor PDCCH in the control resource set with lowest CORESET-ID among those old control resource sets ⁇ CORESET1, CORESET2, ... ⁇ .
  • a UE can be configured with a few control resource sets ⁇ CORESET1, CORESET2, ... ⁇ for monitoring PDCCH.
  • the UE detects beam failure on those control resource sets ⁇ CORESET1, CORESET2, ... ⁇
  • the UE can start the beam failure recovery procedure.
  • the UE After the UE receives valid a DCI formats with CRC scrambled by C-RNTI through monitoring PDCCH in the control resource configured by higher layer parameter Beam-failure-recovery-Response-CORESET, the UE can be requested to only monitor PDCCH in one control sets of those old control resource sets ⁇ CORESET1, CORESET2, ... ⁇ and only monitor particular DCI format(s).
  • the UE can be requested to only monitor PDCCH in the control resource set with lowest CORESET-ID among those old control resource sets ⁇ CORESET1, CORESET2, ... ⁇ and the UE can be requested to only DCI format 0_0 and DCI format 1_0 in that control resource set.
  • a UE can be configured with two UL channels for beam recovery request transmission, a first UL channel and a second UL channel.
  • a first UL channel can be a UL channel without beam sweeping operation.
  • An example of a first UL channel is NR-PUCCH channel.
  • a second UL channel can be a UL channel that supports TRP Rx beam sweeping and/or UE Tx beam sweeping.
  • An example of a second UL channel is NR-PRACH channel.
  • the use case for a first UL channel is when the beam failure event is detected in DL connection and the UL connection can still support reliable PUCCH transmission.
  • the use case for a second UL channel is when beam failure event is detected in DL connection and the TRP Rx beam/UE Rx beam for UL transmission are misaligned too.
  • a first UL channel can be a contention-free UL channel for beam recovery request transmission.
  • a second UL channel can be a contention-based UL channel for beam recovery request transmission.
  • one UE can be configured with a dedicated resource, for example, one dedicated preamble sequence, and the UE can transmit the indicated preamble in one selected time-frequency resource for the beam recovery request.
  • one UE can be configured with a subset of dedicated resources for beam recovery request, for example, a subset of preamble sequences and the UE can be requested to select one from that subset for beam recovery request transmission.
  • the UE is configured with a first transmit beam recovery request on a first UL channel when a beam failure trigger condition is met (e.g., through measuring beam failure detection RS, e.g., NR-SS block or CSI-RS for beam management).
  • a beam failure trigger condition e.g., through measuring beam failure detection RS, e.g., NR-SS block or CSI-RS for beam management.
  • the UE can be configured to transmit beam recovery request on a second UL channel to report the same detected beam failure event.
  • FIGURE 14 illustrates a flow chart of a procedure 1400 for sending beam recovery request on a first UL channel and a second channel n example according to embodiments of the present disclosure.
  • the embodiment of the procedure 1400 illustrated in FIGURE 14 is for illustration only. FIGURE 14 does not limit the scope of this disclosure to any particular implementation
  • a TRP configures by high layer a UE with a first UL channel and a second UL channel for beam recovery request transmission in step 1410.
  • a TRP configures by high layer a UE with a first time window length and a first maximal number transmission number, M max,1 , for the beam recovery transmission on a first UL channel in step 1410.
  • a TRP configures by high layer a UE with a second time window length and a second maximal number transmission number, M max,2 , for the beam recovery transmission on a first UL channel in step 1410.
  • the UE can be requested to monitor beam failure detection RS to determine if the beam failure trigger condition is met.
  • the example for beam failure detection RS can be NR-SS signal in one or more NR-SS blocks, the NR-PBCH and DMRS in one or more NR-SS blocks, and the CSI-RS transmission for beam management.
  • the UE detects beam failure event in step 1420.
  • the UE first sends beam recovery request message in a first UL channel in step 1430 that is configured by the TRP in step 1410.
  • the UE monitors beam recovery response from the NW during a first time window. If there is no beam recovery response, the UE can re-send the beam recovery request message in a first UL channel in step 1430.
  • the UE When there is no beam recovery response when the number of beam recovery request transmission on a first UL channel achieves M max,1 in step 1440, the UE sends beam recovery request on a second UL channel in step 1450. After sending beam recovery request, the UE monitors beam recovery response during a second time window. If no beam recovery response is received within a second time window after sending a beam recovery request on a second UL channel, the UE re-sends the beam recovery request on a second UL channel until the number of beam recovery request transmission on a second UL channel achieves M max,2 or beam recovery response is received by the UE in step 1450.
  • the UE can process the beam recovery response and operate the configured action in step 1460.
  • TRP Rx beam and UE Tx beam used for UL transmission there can be two different cases for TRP Rx beam and UE Tx beam used for UL transmission.
  • One scenario can be the TRP Rx beam and UE Tx beam selected for UL transmission are still aligned. In that scenario, the beam recovery request can be received successfully by the TRP through a UL channel without beam sweeping operation.
  • Another scenario can be the TRP Rx beam and UE Tx beam selected for UL transmission are misaligned too. In that scenario, the beam recovery request sent on a UL channel without beam sweeping operation could be lost with high probability due to the misaligned TRP Rx beam and UE Tx beam.
  • the UE can be requested to transmit beam recovery request on a UL channel with beam sweeping operation.
  • the UE cannot know if the beams selected for UL transmission are still aligned or not.
  • a UL channel with beam sweeping operation needs much more time resource than a UL channel without beam sweeping operation.
  • the embodiments in the present disclosure provide a way to achieve better tradeoff between time resource overhead and beam recovery request transmission efficiency.
  • a UE can be configured with a first UL channel and a second UL channel for beam recovery request transmission.
  • a TRP configures by high layer a UE with a first time window length and a first timer, T max,1 , for the beam recovery transmission on a first UL channel.
  • a TRP configures by high layer a UE with a second time window length and a second timer, T max,2 , for the beam recovery transmission on a first UL channel.
  • the UE can be requested to monitor beam failure detection RS to determine if the beam failure trigger condition is met.
  • the example for beam failure detection RS can be NR-SS signal in one or more NR-SS blocks, the NR-PBCH and DMRS in one or more NR-SS blocks, and the CSI-RS transmission for beam management.
  • the UE detects beam failure event. For the detected beam failure event, the UE first sends beam recovery request message in a first UL channel. After sending beam recovery request message in a first UL channel, the UE monitors beam recovery response from the NW during a first time window. If there is no beam recovery response, the UE can re-send the beam recovery request message in a first UL channel.
  • the UE When there is no beam recovery response when the number of beam recovery request transmission on a first UL channel achieves T max,1 , the UE sends beam recovery request on a second UL channel. After sending beam recovery request, the UE monitors beam recovery response during a second time window. If no beam recovery response is received within a second time window after sending a beam recovery request on a second UL channel, the UE re-sends the beam recovery request on a second UL channel until the number of beam recovery request transmission on a second UL channel achieves T max,2 or beam recovery response is received by the UE. When there is beam recovery response corresponding to the beam recovery request sent on the first UL channel, the UE can process the beam recovery response and operate the configured action.
  • a TRP configures by high layer a UE with a first UL channel and a second UL channel for beam recovery request transmission.
  • a TRP configures by high layer a UE with a first time window length and a first maximal number transmission number, M max,1 , and a first timer T max,1 for the beam recovery transmission on a first UL channel.
  • a TRP configures by high layer a UE with a second time window length and a second maximal number transmission number, M max,2 , and a second timer T max,2 for the beam recovery transmission on a first UL channel.
  • the UE can be requested to monitor beam failure detection RS to determine if the beam failure trigger condition is met.
  • the example for beam failure detection RS can be NR-SS signal in one or more NR-SS blocks, the NR-PBCH and DMRS in one or more NR-SS blocks, and the CSI-RS transmission for beam management.
  • the UE detects beam failure event.
  • the UE For the detected beam failure event, the UE first sends beam recovery request message in a first UL channel. After sending beam recovery request message in a first UL channel, the UE monitors beam recovery response from the NW during a first time window. If there is no beam recovery response, the UE can re-send the beam recovery request message in a first UL channel. When there is no beam recovery response when the number of beam recovery request transmission on a first UL channel achieves M max,1 or a first timer T max,1 expires, the UE sends beam recovery request on a second UL channel.
  • the UE After sending beam recovery request, the UE monitors beam recovery response during a second time window. If no beam recovery response is received within a second time window after sending a beam recovery request on a second UL channel, the UE re-sends the beam recovery request on a second UL channel until the number of beam recovery request transmission on a second UL channel achieves M max,2 or a second timer T max,2 expires or beam recovery response is received by the UE. When there is beam recovery response corresponding to the beam recovery request sent on the first UL channel, the UE can process the beam recovery response and operate the configured action.
  • a first UL channel for beam recovery request transmission can be a periodic PUCCH channel.
  • a special bit value for example, all 1s (or all 0s) in the PUCCH payload bit, can be used to indicate that a beam failure event is detected.
  • Other bit values can be used to indicate UL scheduling request, HARQ feedback, CSI report or beam state information report.
  • a second UL channel for beam recovery request transmission can be the PRACH channel and a subset of preamble sequences is configured for beam recovery request through system information message or high layer signaling (e.g., RRC message).
  • system information message or high layer signaling e.g., RRC message.
  • the UE can select one preamble sequence from the subset of preamble sequence configured for beam recovery request.
  • the TRP detects preamble sequence for beam recovery request, the TRP sends a beam recovery response that can contain the one or more of the following information components.
  • the beam recovery response can contain the sequence ID of the detected preamble sequence for beam recovery request. In another example, the beam recovery response can contain a UL transmission scheduling information. In yet another example, the beam recovery response can contain information of a Tx beam that is going to be used for the control channel transmission to the UE who reports the detected preamble sequence. In such example, it can be a NR-SS block index. It can be a CSI-RS resource index or CSI-RS resource index/CSI-RS antenna port index. It can be an Rx beam set ID. In yet another example, the beam recovery response can contain triggering the transmission of CSI-RS transmission for beam management.
  • the CSI-RS transmission can be aperiodic transmission with sub-time in a CSI-RS resource to allow the UE to refine Rx beams.
  • the CSI-RS transmission can be aperiodic transmission to allow the UE to refine TRP Tx beams.
  • the CSI-RS transmission can be semi-persistent transmission.
  • a UE can be configured with two UL channels for beam failure recovery request transmission, i.e., a first UL channel and a second UL channel.
  • the UE when the beam failure recovery request is triggered, the UE can be request to transmit the beam failure recovery request on the earliest available UL channel instance, no matter it is a first UL channel or a second UL channel.
  • the UE can be configured to transmit on both UL channels and then wait for the beam recovery request response for each of the beam recovery request transmission on both UL channels. Once the UE receives the beam recovery request response from the TRP for one beam recovery request transmission on one of the UL channels the UE can abort monitoring the response corresponding to the other UL channel.
  • the UL channel for transmitting beam failure recovery request has multiple time-frequency resource unit.
  • Each time-frequency resource unit is associated with one SS-block or one CSI-RS resource or one set of CSI-RS antenna ports of CSI-RS resource.
  • a UE can be configured with one sequence. The UE can be requested to transmit the UE's configured sequence on one time-frequency resource unit in the UL channel for transmitting beam failure recovery request. After transmitting the configured sequence, the UE can be requested to monitor the downlink PDCCH by assuming the DMRS in PDCCH is spatial QCLed with the SS-block, CSI-RS resource or CSI-RS antenna ports associated with that time-frequency resource unit where the UE transmit the configured sequence.
  • a set of sequences associated with SS-blocks, CSI-RS resources or sets of CSI-RS antenna ports can be configured to a UE.
  • Each sequence in that set is associated with one SS-block, one CSI-RS resource or one set of CSI-RS antenna ports.
  • the UE can be requested to send one of those sequences on the UL channel for beam failure recovery request. After sending the sequence, the UE can be requested to monitor downlink PDCCH by assuming the DMRS in PDCCH is spatial QCLed with the SS block, CSI-RS resource or CSI-RS antenna ports associated with the sequence that the UE transmitted.
  • a UE can be requested to transmit some beam recovery request message on PUCCH channel when only a subset of but not all of the configured BPLs for PDCCH is detected beam failure.
  • a UE can send a flag information in PUCCH to indicate the TRP that a subset of configured BPLs for PDCCH has been detected as beam failure.
  • the UE can assume to monitor the downlink PDCCH for uplink scheduling and then the UE can report the index or indices of PDCCH BPLs that have been detected beam failure to the TRP.
  • the UE can report which of those configured BPLs are detected beam failure in MAC-CE signaling.
  • the UE can report on bitmap and each bit in the bitmap corresponds to one of the configured BPL for PUCCH.
  • the value of one bit in the bit map indicates whether beam failure is detected for the corresponding BPL or not.
  • the value of one bit being 1 can indicate that beam failure is detected for the BPL corresponding to that bit.
  • a UE can send flag information and the index information of BPLs that are detected beam failure in PUCCH.
  • the UE can report one bitmap and each bit in the bitmap corresponds to one of the configured BPL for PUCCH.
  • the value of one bit in the bit map indicates whether beam failure is detected for the corresponding BPL or not.
  • the value of one bit being 1 can indicate that beam failure is detected for the BPL corresponding to that bit.
  • the UE can be configured to indicate one of the followings is transmitted in one reporting instance and also transmit the indicated reporting case.
  • a normal beam reporting is transmitted.
  • the UE can report one or more beam ID (for example, SSB Index or index of CSI-RS resource) and the associated L1-RSRP and differential L1-RSRP measurement of reported SSB index or CSI-RS resource index.
  • a reporting the failure of a subset of PDCCH beams is transmitted.
  • the UE can report one bitmap and each bit in the bitmap corresponds to one of the configured Tx beam for PDCCH. The value of one bit can indicate whether the corresponding beam is failed or not.
  • each bit in the bitmap can be associated with one TCI state configured to PDCCH for one UE for the spatial QCL configuration.
  • 4 TCI states ⁇ M1, M2, M3, M4 ⁇ are configured for one UE for the spatial QCL configuration for UE to receive the PDCCH.
  • a 4-bit bitmap ⁇ b0, b1, b2, b3 ⁇ can be used to indicate the failure status of beam link of the DL RS associated with TCI states ⁇ M1, M2, M3, M4 ⁇ .
  • the UE can assume the bit b0 is used to indicate for TCI state with lowest TCI index among ⁇ M1, M2, M3, M4 ⁇ and can assume bit b1 is used to indicate for TCI state with the second lowest TCI index among ⁇ M1, M2, M3, M4 ⁇ , and can assume bit b2 is used to indicate for TCI state with the third lowest TCI index among ⁇ M1, M2, M3, M4 ⁇ can assume bit b3 is used to indicate for TCI state with the largest TCI index among ⁇ M1, M2, M3, M4 ⁇ .
  • the UE can also report one or more newly identified beams and/or their associated L1-RSRP measurement. In yet another instance, the UE can also report one or more selected Tx beam IDs and/or their associated L1-RSRP measurement. In yet another instance, for periodic beam reporting, if the UE is configured to select and report N Tx beams and their L1-RSRP measurement. In this instance, the UE can be requested to report N-1 Tx beams and their associated L1-RSRP.
  • the beam failure recovery request is transmitted.
  • the UE can report the index of one Tx beam (for example, one SSB index or CSI-RS resource index) and/or the associated L1-RSRP measurement.
  • the UE if the UE is configured to select/report N Tx beams and their L1-RSRP measurement. In this mode, the UE can also be requested to report N-1 Tx beams and their associated L1-RSRP.
  • a combination of normal beam reporting and reporting the failure of a subset of PDCCH beams is transmitted.
  • the UE can be requested to report the information of those failed PDCCH beams and N-L Tx beams selected according to the configuration of normal beam measurement and reporting, where L can be 1, 2, ..., N, where N is the number of Tx beams the UE is configured to report in one beam reporting instance.
  • a combination of normal beam reporting and the beam failure recovery request are transmitted.
  • the UE can be requested to report the beam failure recovery request message and N-L Tx beams selected according to the configuration of normal beam measurement and reporting, where L can be 1, 2, ..., N, where N is the number of Tx beams the UE is configured to report in one beam reporting instance.
  • the beam failure recovery request can include one or more of the following: (1) one flag to indicate that is a beam failure recovery request; (2) the index of one CSI-RS resource or SSB as the newly identified beam that will be used by the NW to transmit response to that beam failure recovery request; and (3) The L1-RSRP (or RSRQ, or SINR) associated with the reported CSI-RS or SSB index.
  • a UE is requested to report the CRIs/SSBIs and the L1-RSRP and differential L1-RSRP of reported CRIs/SSBIs in periodic CSI reporting.
  • the UE can do one of the following.
  • the UE can report a special value of one L1-RSRP or differential L1-RSRP to indicate the reported CRI/SSBI corresponding to that L1-RSRP or differential L1-RSRP is a failed beam.
  • Some example of the special value can be all 1s or all 0s.
  • the UE can be report a special value of one L1-RSRP or differential L1-RSRP to indicate the reported CRI/SSBI corresponding to that L1-RSRP or differential L1-RSRP is used to report the beam failure state of downlink control channel.
  • the bits of that CRI/SSBI can be used indicate which ones of the CORESETs has failed beam.
  • the bits of that CRI/SSBI can be used as a bitmap to indicate which ones of the CORESETs of that UE has failed beam.
  • each bit in b 1 b 2 b 3 b 4 b 5 b 6 can be used to indicate the beam failure status of one CORESET configured to that UE.
  • the value of each bit being 1 can indicate the associated CORESET has beam failure and the value of each bit being 0 can indicate the associated CORESET has no beam failure.
  • Bit b 1 can be associated with the CORESET with lowest CORESET-ID among the CORESETs configured to that UE.
  • Bit b 2 can be associated with the CORESET with second lowest CORESET-ID among the CORESETs configured to that UE.
  • Bit b 3 can be associated with the CORESET with third lowest CORESET-ID among the CORESETs configured to that UE, so on so forth.
  • the UE reports 2-bit in one reporting instance to indicate the type of reporting content in one reporting instance.
  • the value of 2-bit being 00 can indicate the reporting content in one reporting instance is normal beam reporting as described above; the value of 2-bit being 01 can indicate the reporting content in one reporting instance is reporting the failure of a subset of PDCCH beams.
  • the UE can be requested to report up to B bits payload, ⁇ b 0 ,b 1 ,...,b B-1 ⁇ , in one beam reporting instance.
  • the UE can be requested to use first two bits b 0 ,b 1 to indicate which content is reported in this beam reporting instance through the rest of bits in up to B bits payload.
  • the UE can set the value of b 0 ,b 1 to be 00 and uses some or all of the rest bits to report one or more SSB indices or indices of CSI-RS resources and their associated L1-RSRP and differential L1-RSRP; If the UE reports the failure of a subset of PDCCH beams, the UE can set the value of b 0 ,b 1 to be 01 and then uses bits b 2 ,b 3 ,...,b Q+1 as bitmap to indicate the failure status of each PDCCH beam of Q configured PDCCH beams; If the UE reports the beam failure recovery request, the UE can set the value of b 0 ,b 1 to 10 and then some bits in ⁇ b 2 ,b 3 ,...,b B-1 ⁇ to report
  • the UE can reports 1-bit in one reporting instance to indicate the type of reporting content in one reporting instance.
  • the value of 1-bit being 0 can indicate the reporting content in one reporting instance is normal beam reporting as described above; the value of 1-bit being 1 can indicate the reporting content in one reporting instance is beam failure request and the UE can report one selected SSB index or index of CSI-RS resource and/or the UE's associated L1-RSRP measurement.
  • the UE can be requested to report up to B bits payload, ⁇ b 0 ,b 1 ,...,b B-1 ⁇ , in one beam reporting instance.
  • the UE can be requested to use first one bit b 0 to indicate which content is reported in this beam reporting instance through the rest of bits in up to B bits payload.
  • the UE can set the value of b 0 to be 0 and uses some or all of the rest bits to report one or more SSB indices or indices of CSI-RS resources and their associated L1-RSRP and differential L1-RSRP; If the UE reports the beam failure recovery request, the UE can set the value of b 0 to 1 and then some bits in ⁇ b 1 ,b 2 ,...,b B-1 ⁇ to report one index of selected SSB or CSI-RS resource and/or the UE's associated L1-RSRP measurement.
  • the UE can dynamically determine the reporting content selection based on the number of configured PDCCH beams. If only one Tx beam is configured for the UE to monitor for the failure of PDCCH, the UE can determine that the UE reports normal beam reporting or beam failure recovery request. Then only 1 bit in the reporting content can be used to indicate which content is contained in one beam reporting instance. If more than one Tx beams are configured for the UE to monitor for the failure of PDCCH, the UE can determine that the UE can report normal beam reporting, failure of a subset of PDCCH beams or beam failure recovery request; then two bits in the reporting content can be used to indicate which content is contained in one beam reporting instance.
  • the UE can be requested to apply different scramble sequences on the reporting bits ⁇ b 0 ,b 1 ,...,b B-1 ⁇ for different reporting contents.
  • the UE can be requested to a first scramble sequence on the reporting bits ⁇ b 0 ,b 1 ,...,b B-1 ⁇ if the UE reports normal beam reporting in one reporting instance.
  • the UE can be requested to a second scramble sequence on the reporting bits ⁇ b 0 ,b 1 ,...,b B-1 ⁇ if the UE reports the failure of a subset of PDCCH beams in one reporting instance.
  • the UE can be requested to a third scramble sequence on the reporting bits ⁇ b 0 ,b 1 ,...,b B-1 ⁇ if the UE reports beam failure recovery request in one reporting instance.
  • the UE can be requested to only report one CSI-RS resource index as the new beam when reporting beam failure recovery request in PUCCH channel.
  • the UE can be requested to add one bit appended to the SSB index bits or CSI-RS resource index bits to indicate whether one reported index is SSB index or CSI-RS resource index.
  • the value of that one bit can be used to indicate the type of RS of that the reported DL RS resource in beam failure request sent in PUCCH.
  • the UE can be requested to monitor CORESET that is dedicatedly configured for monitoring beam recovery request response.
  • a UE can be configured with one preamble sequence and/or a set of preamble sequence for the transmission of beam recovery request.
  • the UE can be requested to calculate the scheme to receive the beam recovery response according to the configuration of preamble sequence.
  • a UE can be configured with one preamble sequence.
  • the UE can be requested to send the configured preamble sequence on some selected time-frequency resource when beam failure is detected the trigger condition for beam recovery request is satisfied.
  • the UE can be requested to monitor the PDCCH by assuming the Tx beam corresponding to the CSI-RS resource or SS-block associated with the selected time-frequency resource is used to transmit the PDCCH by the TRP and by assuming that the PDCCH can be scrambled by the UE ID.
  • a UE can be configured with a set of preamble sequences.
  • the UE can be requested to select one from the configured preamble sequences and send the selected preamble sequence on some selected time-frequency resource when beam failure is detected the trigger condition for beam recovery request is satisfied.
  • the UE can be requested to monitor the PDCCH by assuming the Tx beam corresponding to the CSI-RS resource or SS-block associated with the selected time-frequency resource is used to transmit the PDCCH by the TRP and by assuming that the PDCCH can be scrambled by the UE ID.
  • the UE After receiving the beam response, the UE can be requested to report the UE ID in the uplink transmission that is scheduled by beam recovery response.
  • a UE can be configured with one preamble sequence a and a set of preamble sequences.
  • the UE can be requested to send the configured preamble sequence a on some selected time-frequency resource when beam failure is detected the trigger condition for beam recovery request is satisfied.
  • the UE can be requested to monitor the PDCCH by assuming the Tx beam corresponding to the CSI-RS resource or SS-block associated with the selected time-frequency resource is used to transmit the PDCCH by the TRP and by assuming that the PDCCH can be scrambled by the UE ID.
  • the UE can re-send preamble sequence a on some selected time-frequency resource. If the number of transmitting preamble sequence a without successful response achieves some configured threshold or a timer for trying sending preamble sequence a expires, the UE can be requested to use the configured set of preamble sequences for beam recovery request transmission. The UE can be requested to select one from the configured preamble sequences and send the selected preamble sequence on some selected time-frequency resource when beam failure is detected the trigger condition for beam recovery request is satisfied.
  • the UE After sending the preamble sequence, the UE can be requested to monitor the PDCCH by assuming the Tx beam corresponding to the CSI-RS resource or SS-block associated with the selected time-frequency resource is used to transmit the PDCCH by the TRP and by assuming that the PDCCH can be scrambled by the UE ID. After receiving the beam response, the UE can be requested to report the UE ID in the uplink transmission that is scheduled by beam recovery response.
  • a communication system includes a downlink (DL) that conveys signals from transmission points such as base stations (BSs) or NodeBs to user equipments (UEs) and an uplink (UL) that conveys signals from UEs to reception points such as NodeBs.
  • DL downlink
  • UE user equipment
  • UL uplink
  • SL sidelink
  • a UE also commonly referred to as a terminal or a mobile station, may be fixed or mobile and may be a cellular phone, a personal computer device, etc.
  • a NodeB which is generally a fixed station, may also be referred to as an access point or other equivalent terminology such as eNodeB.
  • the access network including the NodeB as related to 3GPP LTE is called as Evolved Universal Terrestrial Access Network (E-UTRAN).
  • E-UTRAN Evolved Universal Terrestrial Access Network
  • DL signals can include data signals conveying information content, control signals conveying DL control information (DCI), and reference signals (RS) that are also known as pilot signals.
  • DCI DL control information
  • RS reference signals
  • a NodeB transmits data information through a physical DL shared channel (PDSCH).
  • PDSCH physical DL shared channel
  • a NodeB transmits DCI through a physical DL control channel (PDCCH) or an enhanced PDCCH (EPDCCH).
  • PDSCH physical DL shared channel
  • EPDCCH enhanced PDCCH
  • C-RNTI cell radio network temporary identifier
  • the C-RNTI is the RNTI to be used by a given UE while the UE is in a particular cell after the UE and a NodeB establish an RRC connection.
  • a NodeB transmits one or more of multiple types of RS including a UE-common RS (CRS), a channel state information RS (CSI-RS), or a demodulation RS (DMRS).
  • CRS UE-common RS
  • CSI-RS channel state information RS
  • DMRS demodulation RS
  • a CRS is transmitted over a DL system bandwidth (BW) and can be used by UEs to obtain a channel estimate to demodulate data or control information or to perform measurements.
  • BW DL system bandwidth
  • a NodeB may transmit a CSI-RS with a smaller density in the time and/or frequency domain than a CRS.
  • DMRS can be transmitted only in the BW of a respective PDSCH or EPDCCH and a UE can use the DMRS to demodulate data or control information in a PDSCH or an EPDCCH, respectively.
  • a transmission time interval for DL channels is referred to as a sub-frame (SF) and can have, for example, duration of 1 millisecond.
  • a number of ten SFs is referred to as a frame and is identified by a system frame number (SFN).
  • cellular communication networks have been designed to establish wireless communication links between mobile devices (UEs) and fixed communication infrastructure components (such as base stations or access points) that serve UEs in a wide or local geographic range.
  • UEs mobile devices
  • fixed communication infrastructure components such as base stations or access points
  • D2D device-to-device
  • This type of network is typically referred to as an "ad-hoc" network.
  • a hybrid communication network can support devices that connect both to fixed infrastructure components and to other D2D-enabled devices. While UEs such as smartphones can be envisioned for D2D networks, vehicular communication can also be supported by a communication protocol where vehicles exchange control or data information with other vehicles or other infrastructure or UEs. Such a network is referred to as a V2X network. Multiple types of communication links can be supported by nodes supporting V2X in the network and can utilize same or different protocols and systems.
  • FIGURE 15 illustrates an example use case of a vehicle-centric communication network 1500 according to embodiments of the present disclosure.
  • the embodiment of the use case of a vehicle-centric communication network 1500 illustrated in FIGURE 15 is for illustration only.
  • FIGURE 15 does not limit the scope of this disclosure to any particular implementation.
  • V2X Vehicle-to-Everything
  • V2V vehicle-to-vehicle
  • V2I vehicle-to-infrastructure
  • V2P vehicle-to-pedestrian
  • V2X can use "co-operative awareness" to provide more intelligent services for end-users.
  • transport entities such as vehicles, roadside infrastructure, and pedestrians
  • knowledge of their local environment e.g., information received from other vehicles or sensor equipment in proximity
  • process and share that knowledge in order to provide more intelligent services, such as cooperative collision warning or autonomous driving.
  • a V2X communication can be used to implement several types of services that are complementary to a primary communication network or to provide new services based on a flexibility of a network topology.
  • V2X can support unicasting, broadcasting, or group/multicasting as potential means for V2V communication 100 where vehicles are able to transmit messages to all in-range V2V-enabled devices or to a subset of devices that are members of particular group.
  • the protocol can be based on LTE-D2D or on a specialized LTE-V2V protocol.
  • V2X can support V2I communication 1501 between one or more vehicles and an infrastructure node to provide cellular connectivity as well as specialized services related to control and safety of vehicular traffic.
  • V2P communication 1502 can also be supported, for example to provide safety services for pedestrians or traffic management services.
  • V2X multicast communication 1503 can be used to provide safety and control messages to large numbers of vehicles in a spectrally efficient manner.
  • the two primary standardized messages for V2V/V2I communication are the periodic beacons called cooperative awareness messages (CAM) and the event-triggered warning messages, called decentralized environment notification messages (DENM).
  • CAM cooperative awareness messages
  • DENM decentralized environment notification messages
  • the CAMs are periodically broadcasted beacons used to maintain awareness of the surrounding vehicles. These messages are sent with an adaptive frequency of 1-10 Hz.
  • the CAMs include information such as position, type and direction.
  • the DENMs are event-triggered warning messages which are generated to alert neighboring vehicles about potential hazards.
  • vehicle devices can be able to support many different communication protocols and include support of mandatory or optional features, since the traffic types, QoS requirements, and deployment topologies are distinct from other types of communications, the hardware/software on a vehicle for supporting V2X can have a reduced or specialized functionality compared to other devices.
  • protocols related to low-complexity, low-data rate, and/or low-latency for machine-type communications 1504 can be supported such as, for example, traffic tracking beacons.
  • Satellite-based communication 1505 can also be supported for V2X networks for communication or positioning services.
  • a direct communication between vehicles in V2V is based on a sidelink (SL) interface.
  • Sidelink is the UE to UE interface for SL communication and SL discovery.
  • the SL corresponds to the PC5 interface as defined in REF 6.
  • SL communication is defined as a functionality enabling proximity services (ProSe) Direct Communication as defined in LTE specification between two or more nearby UEs using E-UTRA technology but not traversing any network node.
  • E-UTRAN allows such UEs that are in proximity of each other to exchange V2V-related information using E-UTRA(N) when permission, authorization and proximity criteria are fulfilled.
  • the proximity criteria can be configured by the MNO.
  • UEs supporting V2V Service can exchange such information when served by or not served by E-UTRAN which supports V2X Service.
  • the UE supporting V2V applications transmits application layer information (e.g. about the UE's location, dynamics, and attributes as part of the V2V Service).
  • the V2V payload must be flexible in order to accommodate different information contents, and the information can be transmitted periodically according to a configuration provided by the MNO.
  • V2V is predominantly broadcast-based; V2V includes the exchange of V2V-related application information between distinct UEs directly and/or, due to the limited direct communication range of V2V, the exchange of V2V-related application information between distinct UEs via infrastructure supporting V2X Service, e.g., RSU, application server, etc.
  • V2X Service e.g., RSU, application server, etc.
  • FIGURE 16 illustrates an example SL interface 1600 according to embodiments of the present disclosure.
  • the embodiment of the SL interface 1600 illustrated in FIGURE 16 is for illustration only.
  • FIGURE 16 does not limit the scope of this disclosure to any particular implementation
  • FIGURE 16 illustrates an example SL interface according to illustrative embodiments of the present disclosure. While UL designates the link from UE 1601 to NodeB 1603 and DL designates the reverse direction, SL designates the radio links over the PC5 interfaces between UE 1601 and UEs 1602. The UE 1601 transmits a V2V message to multiple UEs 1602 in the SL. SL communication happens directly without using E-UTRAN technology and not traversing any network node NodeB 1603. The PC5 interface re-uses existing frequency allocation, regardless of the duplex mode (frequency division duplex (FDD) or time division duplex (TDD).
  • FDD frequency division duplex
  • TDD time division duplex
  • V2V links occurs in the UL band in case of FDD.
  • the PC5 interface uses SFs that are reserved for UL transmission in TDD.
  • the signal transmission is based on single carrier frequency division multiple access (SC-FDMA) that is also used for UL transmission.
  • SC-FDMA single carrier frequency division multiple access
  • the new channels can be largely based on the channel structure applicable for the transmission of the physical UL shared channel (PUSCH).
  • a resource pool is a set of resources assigned for sidelink operation. It consists of the subframes and the resource blocks within the subframe.
  • RP resource pool
  • two additional physical channels are introduced: physical sidelink control channel (PSCCH) carrying the control information, and physical sidelink shared channel (PSSCH) carrying the data.
  • PSCCH physical sidelink control channel
  • PSSCH physical sidelink shared channel
  • FIGURE 17 illustrates an example resource pool for PSCCH 1700 according to embodiments of the present disclosure.
  • the embodiment of the resource pool for PSCCH 1700 illustrated in FIGURE 17 is for illustration only.
  • FIGURE 17 does not limit the scope of this disclosure to any particular implementation
  • FIGURE 17 illustrates an example resource pool for PSCCH according to illustrative embodiments of the present disclosure.
  • the pool is defined in frequency (by parameter), for example, PRBnum that defines the frequency range in physical resource block (PRB) bandwidth units; and PRBstart and PRBend define the location in the frequency domain within the uplink band.
  • the pool is defined in the time domain (by a bitmap) that indicates the 1msec sub-frames used for PSCCH transmission.
  • This block of resources is repeated with a period defined by a parameter SC-Period (expressed in sub-frame duration, i.e. 1msec).
  • SC-Period expressed in sub-frame duration, i.e. 1msec.
  • the range of possible values for SC-Period is from 40 msec to 320 msec: low values are supported for voice transmission.
  • SIB system information block
  • the devices which are not within coverage (and hence cannot acquire the SIB) may use some pre-configured values internally stored.
  • the PSCCH is used by the V2X transmitting UE to make the members of the V2X transmitting UE's group aware of the next data transmission that may occur on the PSSCH.
  • the V2X transmitting UE sends the sidelink control information (SCI) format 1 on the PSCCH as shown in TABLE 1.
  • SCI sidelink control information
  • Devices interested in receiving V2X services blindly scan the whole PSCCH pool to search if a SCI format matching their group identifier can be detected.
  • resources to transmit the SCI format information may be selected within the PSCCH pool.
  • reception resource pools Rx RPs
  • transmission resource pools Tx RPs
  • reception resource pools Rx RPs
  • Tx RPs transmission resource pools
  • transmission of V2X on sidelink is scheduled by NodeB.
  • the UE receives DCI format 5A from the NodeB a and then sends SCI format over the resources indicated by DCI format 5A that is illustrated in TABLE 2. Access to the sidelink resources is driven by the NodeB. The UE needs to be connected to transmit data.
  • schemes of transmit diversity transmission for V2V/V2X are proposed.
  • the methods of transmission schemes, DMRS design and SCI/DCI format design are provided in the present disclosure.
  • the UE can be configured to detect DMRS with two antenna ports. This design is useful to the V2V/V2X UE to support transmit diversity with two antenna ports, for example SFBC, STBC and large delay CDD.
  • the design of new DMRS may enable the rel14 to measure the PSSCH-RSRP based on the one of the antenna port in the newly designed DMRS.
  • the DMRS of those two antenna ports for PSSCH P 0 ,P 1 are mapped to different DMRS OFDM symbols.
  • the DMRS of antenna port P 0 are mapped to OFDM symbols 2 and 8 (1810 and 1812) and the DMRS of antenna port P 1 are mapped to OFDM symbols 5 and 11 (1811 and 1813).
  • the DMRS of antenna port P 0 are mapped to OFDM symbols 2 and 5 (1810 and 1811) and the DMRS of antenna port P 1 are mapped to OFDM symbols 8 and 11 (1812 and 1813).
  • FIGURE 18 illustrates an example DMRS configuration 1800 according to embodiments of the present disclosure.
  • the embodiment of the DMRS configuration 1800 illustrated in FIGURE 18 is for illustration only.
  • FIGURE 18 does not limit the scope of this disclosure to any particular implementation.
  • the same reference signal sequence can be used for DMRS antenna ports P 0 and P 1 as shown in TABLE 3.
  • different reference signal sequences can be used for two DMRS antenna ports P 0 and P 1 .
  • the reference signal for DMRS antenna ports P 0 and P 1 are mapped to OFDM symbols ⁇ 2, 5, 8, 11 ⁇ and the reference signal for DMRS can be generated according one or more of the fields in following TABLE 4A.
  • DMRS antenna ports using two different reference signal sequences can be mapped to the same OFDM symbols.
  • DMRS antenna ports P 0 and P 1 are mapped to DMRS symbols 2/5/8/11.
  • sequence 0 and 2 are sequence for first DMRS in a lot and sequence 1 and 3 are sequences for second DMRS in a slot.
  • sequence 0 is mapped to symbols 2 and 8 for DMRS antenna port P 0
  • sequence 1 is mapped to symbols 5 and 11 for DMRS antenna port P 0
  • Sequence 2 is mapped to symbols 2 and 8 for DMRS antenna port P 1
  • sequence 3 is mapped to symbols 5 and 11 for DMRS antenna port P 1 .
  • OCC code can be applied for each antenna port. For antenna port P 0 , the OCC code can be:
  • the OCC code can be one of the followings:
  • the sequence can be mapped for antenna ports P 0 and P 1 .
  • sequence 0 is mapped to symbols 2 and 8
  • sequence 3 is mapped to symbols 5 and 11.
  • sequence 2 is mapped to symbols 2 and 8
  • sequence 1 is mapped to symbols 5 and 11.
  • the OCC code can be one of the followings: .
  • the OCC code can be one of the followings: .
  • the sequence can be mapped for antenna ports P 0 and P 1 .
  • sequence 0 is mapped to symbols 2 and 8
  • sequence 3 is mapped to symbols 5 and 11.
  • sequence 2 is mapped to symbols 2 and 8
  • sequence 1 is mapped to symbols 5 and 11.
  • the OCC code can be one of the followings: In one example, for antenna port P 0 , the OCC code can be one of the followings:
  • FIGURE 19 illustrates another example DMRS configuration 1900 according to embodiments of the present disclosure.
  • the embodiment of the DMRS configuration 1900 illustrated in FIGURE 19 is for illustration only.
  • FIGURE 19 does not limit the scope of this disclosure to any particular implementation
  • the DMRS of two antenna ports for PSSCH P 0 and P 1 are mapped to different REs of same DMRS OFDM symbols.
  • the even number of REs is mapped to a first antenna port and the odd number of REs is mapped to a second antenna port.
  • An example is illustrated in FIGURE 19.
  • the DMRS reference signal sequences are generated according to TABLE 3. On Symbols ⁇ 2, 5, 8, 11 ⁇ , the even number of REs within the PSSCH allocation are mapped to antenna port P 0 and the odd number of REs within the PSSCH allocation are mapped to antenna port P 1 .
  • the even number of REs within the PSSCH allocation are mapped to antenna port P 0 and the odd number of REs within the PSSCH allocation are mapped to antenna port P 1 .
  • symbols ⁇ 5, 11 ⁇ the even number of REs within the PSSCH allocation are mapped to antenna port P 1 and the odd number of REs within the PSSCH allocation are mapped to antenna port P 0 .
  • the even number of REs within the PSSCH allocation are mapped to antenna port P 0 and the odd number of REs within the PSSCH allocation are mapped to antenna port P 1 .
  • symbols ⁇ 8, 11 ⁇ the even number of REs within the PSSCH allocation are mapped to antenna port P 1 and the odd number of REs within the PSSCH allocation are mapped to antenna port P 0 .
  • the even number of REs within the PSSCH allocation are mapped to antenna port P 0 and the odd number of REs within the PSSCH allocation are mapped to antenna port P 1 .
  • symbols ⁇ 5, 8 ⁇ the even number of REs within the PSSCH allocation are mapped to antenna port P 1 and the odd number of REs within the PSSCH allocation are mapped to antenna port P 0 .
  • a UE can be configured with DMRS sequences and mapping that can support specific pre-coder cycling scheme.
  • the UE can be requested to only use the DMRS transmitted on particular time location and/or frequency location to estimate the channel for demodulation of PSSCH transmission on particular time location and/or frequency location.
  • This embodiment is useful to support pre-coder cycling transmission scheme along frequency domain and/or time domain.
  • pre-coder cycling transmission scheme the pre-coder can be changed along frequency and/or time and the UE needs to know which part of DMRS can be used to the estimate the channel for demodulation of one particular part of PSSCH.
  • Pre-coder cycling can also be called pre-coder switching, pre-coder vector switching, pre-coding vector switching and PVS.
  • the term 'pre-coder cycling' is exemplary and can be substituted with any other names or labels without changing the substances of this disclosure.
  • the UE can be configured to assume that the same pre-coder(s) are applied to DMRS symbols and data symbols in PSSCH as follows as showed in FIGURE 18.
  • the same pre-coder(s) are applied to DMRS symbol 2, 1810 and data symbols ⁇ 0, 1, 3 ⁇ in PSSCH in one subframe.
  • the same pre-coder(s) are applied to DMRS symbol 5, 1811 and data symbols ⁇ 4, 6 ⁇ in PSSCH in one subframe.
  • the same pre-coder(s) are applied to DMRS symbol 8, 1812 and data symbols ⁇ 7, 9 ⁇ in PSSCH in one subframe.
  • the same pre-coder(s) are applied to DMRS symbol 11, 1813 and data symbols ⁇ 10, 12 ⁇ in PSSCH in one subframe.
  • the UE can be configured to assume same pre-coder(s) are applied DMRS symbols and data symbols in PSSCH as follows as showed in FIGURE 18.
  • the same pre-coder(s) are applied to DMRS symbols 2 and 5 (1810 and 1811) and data symbols ⁇ 0, 1, 3, 4, 6 ⁇ in PSSCH in one subframe.
  • the same pre-coder(s) are applied to DMRS symbols 8 and 11 (1812 and 1813) and data symbols ⁇ 7, 9, 10, 12 ⁇ in PSSCH in one subframe.
  • FIGURE 20 illustrates an example PRB configuration 2000 according to embodiments of the present disclosure.
  • the embodiment of the PRB configuration 2000 illustrated in FIGURE 20 is for illustration only.
  • FIGURE 20 does not limit the scope of this disclosure to any particular implementation
  • the UE can be configured to assume the same pre-coder(s) are applied to one continuous PRB sets with one or more PRBs in frequency domain.
  • the UE can be configured to assume the pre-coder(s) on DMRS symbol is changed every PRB. As illustrated in FIGURE 20, the UE can be configured to assume the pre-coder(s) applied to PRB0, PRB1, ..., PRB9 within the PSSCH allocation are different and the UE cannot use the DMRS signal across the PRBs to estimate the channel.
  • the UE can be configured to assume the pre-coder(s) on DMRS symbol is changed every two PRB. As illustrated in FIGURE 20, the UE can be configured to assume the pre-coder(s) applied to each PRB pair ⁇ PRB0, PRB1 ⁇ , ⁇ PRB2, PRB3 ⁇ , ⁇ PRB4, PRB5 ⁇ , ⁇ PRB6, PRB7 ⁇ , ⁇ PRB8, PRB9 ⁇ within the PSSCH allocation are different and the UE can use the DMRS signal within each of those the PRB pair to estimate the channel.
  • the UE can be configured to assume the pre-coder(s) on DMRS symbol is changed every 4 PRBs. As illustrated in FIGURE 20, the UE can be configured to assume the pre-coder(s) applied to ⁇ PRB0, PRB1, PRB2, PRB3 ⁇ , ⁇ PRB4, PRB5, PRB6, PRB7 ⁇ , ⁇ PRB8, PRB9 ⁇ within the PSSCH allocation are different and the UE can use the DMRS signal within each of those PRB subset/bundling set to estimate the channel.
  • the UE can be configured to assume the same pre-coder(s) are applied to each continuous N subcarrier in frequency domain in one OFDM symbol.
  • the value of N can be 1/2/3/4/6/12/24/48.
  • the transmission scheme for PSSCH in V2V/V2X link can be: pre-coder cycling across subcarriers and/or OFDM symbols; the combination of SFBC and pre-coder cycling across subcarriers and/or OFDM symbols; and/or the combination of STBC and pre-coder cycling across subcarriers and/or OFDM symbols.
  • the transmission scheme of pre-coder cycling for PSSCH can be one of the following alternatives: N pre-coders are cycled through by transmitter UE in frequency domain (e.g., the pre-coders can be cycled across PRBs and/or the pre-coders can be cycled across REs); M pre-coders are cycled through by transmitter UE in time domain (e.g., the pre-corders can be cycled across every few OFDM symbols and/or the pre-coders can be cycled across every OFDM symbol subset); and/or the combination of the above two alternatives.
  • FIGURE 21A illustrates an example DMRS configuration and pre-coder set 2100 according to embodiments of the present disclosure.
  • the embodiment of the DMRS configuration and pre-coder set 2100 illustrated in FIGURE 21A is for illustration only.
  • FIGURE 21A does not limit the scope of this disclosure to any particular implementation.
  • the transmitter UE has two pre-coder sets, pre-coder set 1 and pre-coder set 2 .
  • the pre-coder set 1 can be applied to PSSCH data OFDM symbols ⁇ 0, 1, 3, 4, 6 ⁇ and the pre-coder set 2 can applied to PSSCH data OFDM symbols ⁇ 7, 9, 10, 12 ⁇ , as illustrated in FIGURE 21A.
  • the pre-coders in pre-coder set 1 can be cycled in frequency domain and across every 1/2/3/4/6/12/24/48 subcarriers.
  • the pre-coders in pre-coder set 2 can be cycled in frequency domain and can be cycled across every 1/2/3/4/6/12/24/48 subcarriers.
  • Different cycling patterns in frequency domain can be applied to OFDM symbols sets ⁇ 0, 1, 3, 4, and 6 ⁇ ad ⁇ 7, 9, 10, and 12 ⁇ .
  • the pre-coder set 1 can be applied to PSSCH OFDM symbol set ⁇ 0, 1, 3, 4 ⁇ and the pre-coder set 2 can be applied to PSCCH OFDM symbol set ⁇ 6, 7, 9, 10, 12 ⁇ .
  • the pre-coders in pre-coder set 1 can be cycled across every 48/24/12/6/4/3/2/1 subcarriers.
  • the prec-coders in pre-coder set 2 can be cycled across every 48/24/12/6/4/3/2/1 subcarriers.
  • the number of pre-coders in pre-coder set 1, N 1 can be 1 or more than one.
  • the number of pre-coders in pre-coder set 2, N 2 can be 1 or more than one.
  • the number of pre-coders in pre-coder set 1 and 2 can be equal or different.
  • FIGURE 21B illustrates another example DMRS configuration and pre-coder set 2130 according to embodiments of the present disclosure.
  • the embodiment of the DMRS configuration and pre-coder set 2130 illustrated in FIGURE 21B is for illustration only.
  • FIGURE 21B does not limit the scope of this disclosure to any particular implementation.
  • the transmitter UE has four pre-coder sets, pre-coder set 1 , pre-coder set 2 , pre-coder set 3 , and pre-coder set 4 , as illustrated in FIGURE 21B.
  • the pre-coder set 1 can be applied to PSSCH data OFDM symbols ⁇ 0, 1, 3 ⁇ .
  • the pre-coder set 2 can applied to PSSCH data OFDM symbols ⁇ 4, 6 ⁇ .
  • the pre-coder set 3 can applied to PSSCH data OFDM symbols ⁇ 7, 9 ⁇ .
  • the pre-coder set 4 can applied to PSSCH data OFDM symbols ⁇ 10, 12 ⁇ .
  • the pre-coders in pre-coder set 1 can be cycled in frequency domain and across every 1/2/3/4/6/12/24/48 subcarriers.
  • the pre-coders in pre-coder set 2 can be cycled in frequency domain and across every 1/2/3/4/6/12/24/48 subcarriers.
  • the pre-coders in pre-coder set 3 can be cycled in frequency domain and across every 1/2/3/4/6/12/24/48 subcarriers.
  • the pre-coders in pre-coder set 4 can be cycled in frequency domain and across every 1/2/3/4/6/12/24/48 subcarriers.
  • the pre-coder set 1 can be applied to PSSCH data OFDM symbols ⁇ 0, 1 ⁇
  • the pre-coder set 2 can be applied to PSSCH data OFDM symbols ⁇ 3, 4 ⁇
  • the pre-coder set 3 can be applied to PSSCH data OFDM symbols ⁇ 6, 7 ⁇
  • the pre-coder set 4 can be applied to PSSCH data OFDM symbols ⁇ 9, 10, 12 ⁇ .
  • the number of pre-coders in pre-coder set 1, N 1 can be 1 or more than one.
  • the number of pre-coders in pre-coder set 2, N 2 can be 1 or more than one.
  • the number of pre-coders in pre-coder set 3, N 3 can be 1 or more than one.
  • the number of pre-coders in pre-coder set 4, N 4 can be 1 or more than one.
  • the numbers of pre-coders in pre-coder sets 1, 2, 3 and 4 can be different or equal.
  • FIGURE 21C illustrates yet another example DMRS configuration and pre-coder set 2150 according to embodiments of the present disclosure.
  • the embodiment of the DMRS configuration and pre-coder set 2150 illustrated in FIGURE 21C is for illustration only.
  • FIGURE 21C does not limit the scope of this disclosure to any particular implementation.
  • the transmitter UE has one pre-coder set, pre-coder set 1 , as illustrated in FIGURE 21C.
  • the pre-coder set 1 can be applied to all PSSCH data OFDM symbols ⁇ 0, 1, 3, 4, 6, 7, 9, 10, 12 ⁇ in one subframe.
  • the pre-coders in pre-coder set 1 can be cycled in frequency domain and across every 1/2/3/4/6/12/24/48 subcarriers.
  • the number of pre-coders in pre-coder set 1, N 1 can be one or more than one.
  • the transmission scheme for PSSCH can be the combination of SFBC and pre-coder cycling in frequency/time domain.
  • the codeword of PSSCH can be first mapped to two layers: where d(n) is the modulation symbol(s) in the codeword of PSSCH and x (0) (i) and x (1) (i) are the first and second layers, respectively.
  • the pre-coder cycling for antenna ports p 0 and p 1 can be one of the followings.
  • the transmitter UE has two pre-coder sets, pre-coder set 1 and pre-coder set 2 .
  • the pre-coder set 1 can be applied to PSSCH data OFDM symbols ⁇ 0, 1, 3, 4, 6 ⁇ and the pre-coder set 2 can be applied to PSSCH data OFDM symbols ⁇ 7, 9, 10, 12 ⁇ .
  • the pre-coders in corresponding pre-coder set can be cycled in frequency domain and across every 2/4/6/12/24/48 subcarriers.
  • the transmitter UE has two pre-coder sets, pre-coder set 1 and pre-coder set 2 .
  • the pre-coder set 1 can be applied to PSSCH data OFDM symbols ⁇ 0, 1, 3, 4 ⁇ and the pre-coder set 2 can be applied to PSSCH data OFDM symbols ⁇ 6, 7, 9, 10, 12 ⁇ .
  • the pre-coders in corresponding pre-coder set can be cycled in frequency domain and across every 2/4/6/12/24/48 subcarriers.
  • the transmitter UE has four pre-coder sets, pre-coder set 1 , pre-coder set 2 , pre-coder set 3 , and pre-coder set 4 .
  • the pre-coder set 1 can be applied to PSSCH data OFDM symbols ⁇ 0, 1, 3 ⁇ .
  • the pre-coder set 2 can applied to PSSCH data OFDM symbols ⁇ 4, 6 ⁇ .
  • the pre-coder set 3 can applied to PSSCH data OFDM symbols ⁇ 7, 9 ⁇ .
  • the pre-coder set 4 can applied to PSSCH data OFDM symbols ⁇ 10, 12 ⁇ . In each symbol of PSCCH data OFDM symbols, the pre-coders in corresponding pre-coder set can be cycled in frequency domain and across every 2/4/6/12/24/48 subcarriers.
  • the transmitter UE has four pre-coder sets, pre-coder set 1 , pre-coder set 2 , pre-coder set 3 , and pre-coder set 4 .
  • the pre-coder set 1 can be applied to PSSCH data OFDM symbols ⁇ 0, 1 ⁇ .
  • the pre-coder set 2 can applied to PSSCH data OFDM symbols ⁇ 3, 4 ⁇ .
  • the pre-coder set 3 can applied to PSSCH data OFDM symbols ⁇ 6, 7 ⁇ .
  • the pre-coder set 4 can applied to PSSCH data OFDM symbols ⁇ 9, 10, 12 ⁇ .
  • the pre-coders in corresponding pre-coder set can be cycled in frequency domain and across every 2/4/6/12/24/48 subcarriers.
  • the transmitter UE has one pre-coder set, pre-coder set 1 , as illustrated in FIGURE 21C.
  • the pre-coder set 1 can be applied to all PSSCH data OFDM symbols ⁇ 0, 1, 3, 4, 6, 7, 9, 10, 12 ⁇ in one subframe.
  • the pre-coders in pre-coder set 1 can be cycled in frequency domain and across every 2/4/6/12/24/48 subcarriers.
  • the transmitter applies pre-coder w 1,1 on PSSCH transmitted on OFDM symbols ⁇ 0, 1, 3, 4, 6 ⁇ and DMRS on symbols ⁇ 2, 5 ⁇ of antenna port p 0 .
  • the transmitter UE applies pre-coder w 1,2 on PSSCH transmitted on OFDM symbols ⁇ 7, 9, 10, 12 ⁇ and DMRS on symbols ⁇ 8, 11 ⁇ of antenna port p 0 .
  • the receiver UE can be requested to assume pre-coders w 1,1 and w 1,2 are different.
  • the transmitter applies pre-coder w 2,1 on PSSCH transmitted on OFDM symbols ⁇ 0, 1, 3, 4, 6 ⁇ and DMRS on symbols ⁇ 2, 5 ⁇ of antenna port p 1 .
  • the transmitter UE applies pre-coder w 2,2 on PSSCH transmitted on OFDM symbols ⁇ 7, 9, 10, 12 ⁇ and DMRS on symbols ⁇ 8, 11 ⁇ of antenna port p 1 .
  • the receiver UE can be requested to assume pre-coders w 2,1 and w 2,2 are different.
  • the transmitter applies pre-coder w 1,1 on PSSCH transmitted on OFDM symbols ⁇ 0, 1, 3, 4, 6 ⁇ and DMRS on symbols ⁇ 2, 5 ⁇ of antenna port p 0 .
  • the transmitter UE applies pre-coder w 1,2 on PSSCH transmitted on OFDM symbols ⁇ 7, 9, 10, 12 ⁇ and DMRS on symbols ⁇ 8, 11 ⁇ of antenna port p 0 .
  • the receiver UE can be requested to assume pre-coders w 1,1 and w 1,2 are different.
  • the transmitter applies pre-coder w 2 on PSSCH transmitted on OFDM symbols ⁇ 0, 1, 3, 4, 6, 7, 9, 10, 12 ⁇ and DMRS on symbols ⁇ 2, 5, 8, 11 ⁇ of antenna port p 1 .
  • the transmitter applies pre-coder w 1 on PSSCH transmitted on OFDM symbols ⁇ 0, 1, 3, 4, 6, 7, 9, 10, 12 ⁇ and DMRS on symbols ⁇ 2, 5, 8, 11 ⁇ of antenna port p 0 .
  • the transmitter applies pre-coder w 2,1 on PSSCH transmitted on OFDM symbols ⁇ 0, 1, 3, 4, 6 ⁇ and DMRS on symbols ⁇ 2, 5 ⁇ of antenna port p 1 .
  • the transmitter UE applies pre-coder w 2,2 on PSSCH transmitted on OFDM symbols ⁇ 7, 9, 10, 12 ⁇ and DMRS on symbols ⁇ 8, 11 ⁇ of antenna port p 1 .
  • the receiver UE can be requested to assume pre-coders w 2,1 and w 2,2 are different.
  • One of the aforementioned embodiments can be used for antenna port p 0 .
  • One of the above methods can be used for antenna port p 1 .
  • Different or same pre-coder cycling method can be applied to the antenna ports p 0 and p 1 .
  • the transmission scheme for PSSCH can be the combination of STBC and pre-coder cycling in frequency/time domain.
  • the SBTC scheme over two antenna ports can be transmitted on OFDM symbol pairs ⁇ 0, 1 ⁇ , ⁇ 3, 4 ⁇ , ⁇ 6, 7 ⁇ and ⁇ 9, 10 ⁇ .
  • One OFDM symbol 12, only antenna port p 0 is mapped.
  • An example of transmitting PSSCH codeword is shown in TABLE 5A through 5D.
  • pre-coder cycling can be applied on each of antenna ports of PSSCH, p 0 and p 1 .
  • the pre-coder cycling for antenna ports p 0 and p 1 can be one of the followings.
  • the transmitter UE has two pre-coder sets, pre-coder set 1 and pre-coder set 2 .
  • the pre-coder set 1 can be applied to PSSCH data OFDM symbols ⁇ 0, 1, 3, 4 ⁇ and the pre-coder set 2 can be applied to PSSCH data OFDM symbols ⁇ 6, 7, 9, 10, 12 ⁇ .
  • the pre-coders in corresponding pre-coder set can be cycled in frequency domain and across every 2/4/6/12/24/48 subcarriers.
  • the transmitter UE has four pre-coder sets, pre-coder set 1 , pre-coder set 2 , pre-coder set 3 , and pre-coder set 4 .
  • the pre-coder set 1 can be applied to PSSCH data OFDM symbols ⁇ 0, 1 ⁇ .
  • the pre-coder set 2 can applied to PSSCH data OFDM symbols ⁇ 3, 4 ⁇ .
  • the pre-coder set 3 can applied to PSSCH data OFDM symbols ⁇ 6, 7 ⁇ .
  • the pre-coder set 4 can applied to PSSCH data OFDM symbols ⁇ 9, 10, 12 ⁇ .
  • the pre-coders in corresponding pre-coder set can be cycled in frequency domain and across every 1/2/3/4/6/12/24/48 subcarriers.
  • the transmitter UE has one pre-coder set, pre-coder set 1 , as illustrated in FIGURE 21C.
  • the pre-coder set 1 can be applied to all PSSCH data OFDM symbols ⁇ 0, 1, 3, 4, 6, 7, 9, 10, 12 ⁇ in one subframe.
  • the pre-coders in pre-coder set 1 can be cycled in frequency domain and across every 1/2/3/4/6/12/24/48 subcarriers.
  • the transmitter applies pre-coder w 1,1 on PSSCH transmitted on OFDM symbols ⁇ 0, 1, 3, 4 ⁇ and DMRS on symbols ⁇ 2, 5 ⁇ of antenna port p 0 .
  • the transmitter UE applies pre-coder w 1,2 on PSSCH transmitted on OFDM symbols ⁇ 6, 7, 9, 10, 12 ⁇ and DMRS on symbols ⁇ 8, 11 ⁇ of antenna port p 0 .
  • the receiver UE can be requested to assume pre-coders w 1,1 and w 1,2 are different.
  • the transmitter applies pre-coder w 2,1 on PSSCH transmitted on OFDM symbols ⁇ 0, 1, 3, 4 ⁇ and DMRS on symbols ⁇ 2, 5 ⁇ of antenna port p 1 .
  • the transmitter UE applies pre-coder w 3,2 on PSSCH transmitted on OFDM symbols ⁇ 6, 7, 9, 10 ⁇ and DMRS on symbols ⁇ 8, 11 ⁇ of antenna port p 1 .
  • the receiver UE can be requested to assume pre-coders w 2,1 and w 2,2 are different.
  • the transmitter applies pre-coder w 1,1 on PSSCH transmitted on OFDM symbols ⁇ 0, 1, 3, 4 ⁇ and DMRS on symbols ⁇ 2, 5 ⁇ of antenna port p 0 .
  • the transmitter UE applies pre-coder w 1,2 on PSSCH transmitted on OFDM symbols ⁇ 6, 7, 9, 10, 12 ⁇ and DMRS on symbols ⁇ 8, 11 ⁇ of antenna port p 0 .
  • the receiver UE can be requested to assume pre-coders w 1,1 and w 1,2 are different.
  • the transmitter applies pre-coder w 2 on PSSCH transmitted on OFDM symbols ⁇ 0, 1, 3, 4, 6, 7, 9, 10 ⁇ and DMRS on symbols ⁇ 2, 5, 8,11 ⁇ of antenna port p 1 .
  • the transmitter applies pre-coder w 1 on PSSCH transmitted on OFDM symbols ⁇ 0, 1, 3, 4, 6, 7, 9, 10, 12 ⁇ and DMRS on symbols ⁇ 2, 5, 8, 11 ⁇ of antenna port p 0 .
  • the receiver UE can be requested to assume pre-coders w 1,1 and w 1,2 are different.
  • the transmitter applies pre-coder w 2,1 on PSSCH transmitted on OFDM symbols ⁇ 0, 1, 3, 4 ⁇ and DMRS on symbols ⁇ 2, 5 ⁇ of antenna port p 1 .
  • the transmitter UE applies pre-coder w 3,2 on PSSCH transmitted on OFDM symbols ⁇ 6, 7, 9, 10 ⁇ and DMRS on symbols ⁇ 8, 11 ⁇ of antenna port p 1 .
  • the receiver UE can be requested to assume pre-coders w 2,1 and w 2,2 are different.
  • One of the aforementioned embodiments can be used for antenna port p 0 .
  • One of the above methods can be used for antenna port p 1 .
  • Different or same pre-coder cycling method can be applied to the antenna ports p 0 and p 1 .
  • the SBTC scheme over two antenna ports can be transmitted on OFDM symbol pairs ⁇ 1, 3 ⁇ , ⁇ 4 , 6 ⁇ , ⁇ 7, 9 ⁇ and ⁇ 10, 12 ⁇ .
  • One OFDM symbol 0 only antenna port p 0 is mapped.
  • An example of transmitting PSSCH codeword is shown in TABLE 5E through 5H.
  • pre-coder cycling can be applied on each of antenna ports of PSSCH, p 0 and p 1 .
  • the pre-coder cycling for antenna ports p 0 and p 1 can be one of the followings.
  • the transmitter UE has two pre-coder sets, pre-coder set 1 and pre-coder set 2 .
  • the pre-coder set 1 can be applied to PSSCH data OFDM symbols ⁇ 0, 1, 3, 4, 6 ⁇ and the pre-coder set 2 can be applied to PSSCH data OFDM symbols ⁇ 7, 9, 10, 12 ⁇ .
  • the pre-coders in corresponding pre-coder set can be cycled in frequency domain and across every 1/2/3/4/6/12/24/48 subcarriers.
  • the transmitter UE has four pre-coder sets, pre-coder set 1 , pre-coder set 2 , pre-coder set 3 , and pre-coder set 4 .
  • the pre-coder set 1 can be applied to PSSCH data OFDM symbols ⁇ 0, 1, 3 ⁇ .
  • the pre-coder set 2 can applied to PSSCH data OFDM symbols ⁇ 4, 6 ⁇ .
  • the pre-coder set 3 can applied to PSSCH data OFDM symbols ⁇ 7, 9 ⁇ .
  • the pre-coder set 4 can applied to PSSCH data OFDM symbols ⁇ 10, 12 ⁇ . In each symbol of PSCCH data OFDM symbols, the pre-coders in corresponding pre-coder set can be cycled in frequency domain and across every 1/2/3/4/6/12/24/48 subcarriers.
  • the transmitter UE has one pre-coder set, pre-coder set 1 , as illustrated in FIGURE 21C.
  • the pre-coder set 1 can be applied to all PSSCH data OFDM symbols ⁇ 0, 1, 3, 4, 6, 7, 9, 10, 12 ⁇ in one subframe.
  • the pre-coders in pre-coder set 1 can be cycled in frequency domain and across every 1/2/3/4/6/12/24/48 subcarriers.
  • the transmitter applies pre-coder w 1,1 on PSSCH transmitted on OFDM symbols ⁇ 0, 1, 3, 4, 6 ⁇ and DMRS on symbols ⁇ 2, 5 ⁇ of antenna port p 0 .
  • the transmitter UE applies pre-coder w 1,2 on PSSCH transmitted on OFDM symbols ⁇ 7, 9, 10, 12 ⁇ and DMRS on symbols ⁇ 8, 11 ⁇ of antenna port p 0 .
  • the receiver UE can be requested to assume pre-coders w 1,1 and w 1,2 are different.
  • the transmitter applies pre-coder w 2,1 on PSSCH transmitted on OFDM symbols ⁇ 1, 3, 4, 6 ⁇ and DMRS on symbols ⁇ 2, 5 ⁇ of antenna port p 1 .
  • the transmitter UE applies pre-coder w 3,2 on PSSCH transmitted on OFDM symbols ⁇ 7, 9, 10, 12 ⁇ and DMRS on symbols ⁇ 8, 11 ⁇ of antenna port p 1 .
  • the receiver UE can be requested to assume pre-coders w 2,1 and w 2,2 are different.
  • the transmitter applies pre-coder w 1,1 on PSSCH transmitted on OFDM symbols ⁇ 0, 1, 3, 4, 6 ⁇ and DMRS on symbols ⁇ 2, 5 ⁇ of antenna port p 0 .
  • the transmitter UE applies pre-coder w 1,2 on PSSCH transmitted on OFDM symbols ⁇ 7, 9, 10, 12 ⁇ and DMRS on symbols ⁇ 8, 11 ⁇ of antenna port p 0 .
  • the receiver UE can be requested to assume pre-coders w 1,1 and w 1,2 are different.
  • the transmitter applies pre-coder w 2 on PSSCH transmitted on OFDM symbols ⁇ 1, 3, 4, 6, 7, 9, 10, 12 ⁇ and DMRS on symbols ⁇ 2, 5, 8, 11 ⁇ of antenna port p 1 .
  • the transmitter applies pre-coder w 1 on PSSCH transmitted on OFDM symbols ⁇ 0, 1, 3, 4, 6, 7, 9, 10, 12 ⁇ and DMRS on symbols ⁇ 2, 5, 8, 11 ⁇ of antenna port p 0 .
  • the transmitter applies pre-coder w 2,1 on PSSCH transmitted on OFDM symbols ⁇ 1, 3, 4, 6 ⁇ and DMRS on symbols ⁇ 2, 5 ⁇ of antenna port p 1 .
  • the transmitter UE applies pre-coder w 3,2 on PSSCH transmitted on OFDM symbols ⁇ 7, 9, 10, 12 ⁇ and DMRS on symbols ⁇ 8, 11 ⁇ of antenna port p 1 .
  • the receiver UE can be requested to assume pre-coders w 2,1 and w 2,2 are different.
  • One of the aforementioned embodiments can be used for antenna port p 0 .
  • One of the above methods can be used for antenna port p 1 .
  • Different or same pre-coder cycling method can be applied to the antenna ports p 0 and p 1 .
  • the corresponding control information sent in PSCCH may indicate the related information to a UE so that the UE can decode the PSSCH correctly.
  • the control information can indicate one or more of the following information: whether non-transmit diversity (i.e., single port transmission defined in LTE specification) or transmission diversity scheme is used in the indicated PSSCH allocation; and which transmit diversity scheme is used in the indicated PSSCH allocation.
  • N bits in the reserved information bits of SCI format 1 can be used to indicate the information of transmit diversity.
  • the advantage of that embodiment is that a UE can still decode the SCI format 1 sent for PSSCH with transmit diversity and obtain the allocation information of PSSCH.
  • 1 bit b 0 in the reserved information bits of SCI format 1 can be used to indicate the information of transmit diversity in corresponding PSSCH.
  • the value of 1 bit can indicate whether non-transmit diversity transmission (i.e., single port transmission defined in LTE specification) or transmit diversity scheme is used in the indicated PSSCH as shown in TABLE 6A.
  • the transmit diversity can be predefined in the specification or configured through system information or high layer signaling (e.g., RRC).
  • 2 bit b 0 b 1 in the reserved information bits of SCI format 1 can be used to indicate the information of transmit diversity in corresponding PSSCH.
  • the value of 2 bit can indicate whether non-transmit diversity transmission (i.e., single port transmission defined in LTE specification) or transmit diversity scheme is used in the indicated PSSCH, and also which transmit diversity scheme is used in the indicated PSSCH as shown in TABLE 6B.
  • the transmit diversity schemes 1/2/3 can be predefined in the specification or configured through system information or high layer signaling (e.g., RRC).
  • Each of the transmit diversity scheme configuration can include one or more of the following information: the transmission scheme for PSSCH; and/or the mapping of DMRS.
  • 3 bit b 0 b 1 b 2 in the reserved information bits of SCI format 1 can be used to indicate the information of transmit diversity in corresponding PSSCH.
  • the value of 3 bit can indicate whether non-transmit diversity transmission (i.e., single port transmission defined in LTE specification) or transmit diversity scheme is used in the indicated PSSCH, and also which transmit diversity scheme is used in the indicated PSSCH.
  • An example is illustrated in TABLE 6C.
  • the transmit diversity schemes 1 ⁇ 7 can be predefined in the specification or configured through system information or high layer signaling (e.g., RRC).
  • RRC high layer signaling
  • a UE can determine the transmit diversity scheme used for a PSSCH transmission based on the configuration from system information or high layer signaling (e.g., RRC) or preconfigured.
  • a UE can be requested to use one transmit diversity scheme for a PSSCH transmission as dynamically indicated by the eNB.
  • DCI format 5A is used to schedule PSCCH for V2V/V2X.
  • DCI format 5A can be used to schedule PSCCH that indicates a PSSCH with transmit diversity transmission scheme.
  • DCI format 5A can be scrambled with SL-V-TX-RNTI to indicate the scheduling of PSCCH.
  • the scheduled PSCCH contains SCI format 1 fields used for the scheduling of PSSCH using transmit diversity scheme.
  • a UE is requested to use SL-V-TX-RNTI to decode one DCI format 5A and then can transmit PSSCH as configured by the SCI format 1 fields in the decoded DCI format 5A.
  • one filed can be present in DCI format 5A to indicate the transmit diversity scheme for PSSCH: transmit diversity scheme - N bits.
  • N can be 1, 2, or 3.
  • the DCI format 5A is scrambled with SL-V-TX-RNTI
  • the same fields in DCI format A scrambled by SL-V-RNTI are present.
  • Scrambling with SL-V-TX-RNTI can indicate that the scheduled PSSCH can use transmit diversity scheme, where the transmit diversity scheme can be configured through system information, RRC signaling or preconfigured.
  • DCI format 5A scrambled with SL-SPS-V-TX-RNTI can be used by eNB to schedule SPS transmission with transmit diversity.
  • DCI format 5A when the DCI format 5A is scrambled with SL-SPS-V-TX-RNTI, same fields in DCI format A scrambled by SL-SPS-V-RNTI are present.
  • Scrambling with SL-SPS-V-TX-RNTI can indicate the PSSCH in the scheduled SPS transmission can use transmit diversity scheme, where the transmit diversity scheme can be configured through system information, RRC signaling or preconfigured.
  • one field can be present in DCI format 5A to indicate the transmit diversity scheme for PSSCH: transmit diversity scheme - N bits.
  • N can be 1, 2, or 3.
  • TABLES 6A, 6B, and 6C can be used here for the N bits in DCI format 5A to indicate the transmit diversity scheme.
  • the V2X UE can be configured to use the transmit diversity indicated in the DCI format 5A to transmit the corresponding PSSCH and can also fill the corresponding fields in SCI format 1.
  • a mode-3 UE can be configured with the transmission scheme for PSSCH by the NW semi-statically.
  • the NW can signal one transmission scheme to a mode-3 UE.
  • the NW schedules the PSSCH transmission and SCI format content through DCI format 5A.
  • the UE may fill be transmit diversity scheme field in SCI format transmitted in the scheduled PSSCH according to the NW configuration and also choose the transmit scheme for PSSCH according.
  • a mode-3 UE can choose the transmission scheme for PSSCH autonomously.
  • the NW schedules PSCCH and also the SCI format 1 content through a DCI format 5A.
  • the UE can be requested to determine the transmission scheme for scheduled PSSCH and then fill the SCI format 1 accordingly.
  • a method of a user equipment (UE) for a beam failure recovery in a wireless communication system comprises: receiving, from a base station (BS), at least one beam failure detection reference signal (RS) and at least one new candidate beam RS over a downlink channel; identifying a set of RS resources including an index for the at least one beam failure detection RS; identifying a set of RS resources including an index for the at least one new candidate beam RS; identifying a dedicated control-resource set (CORESET) received from the BS for a beam failure recovery request; transmitting, to the BS, the beam failure recovery request associated with a quality measurement of the at least one beam failure detection RS over a physical random access channel (PRACH); and receiving, from the BS, a beam failure response in response to the beam failure recovery request based on the dedicated CORESET indicated to the UE.
  • BS base station
  • RS beam failure detection reference signal
  • CORESET dedicated control-resource set
  • the method further comprises: identifying a set of RS resources including an index corresponding to the at least one beam failure detection RS that comprises at least one of a periodic channel state information-RS (CSI-RS) or a new radio synchronization signal (NR-SS) block.
  • CSI-RS periodic channel state information-RS
  • NR-SS new radio synchronization signal
  • the method further comprises: identifying a set of RS resources including an index corresponding to the at least one new candidate beam RS that comprises at least one of a periodic CSI-RS or a synchronization signal/physical broadcasting channel (SS/PBCH) block.
  • SS/PBCH synchronization signal/physical broadcasting channel
  • a physical dedicated control channel is transmitted in the dedicated CORESET to the UE using at least one of a beam pair link (BPL) or spatial quasi co-locate (QCL) assumption information with a reference to at least one RS resource from a set of new candidate beam RS resources.
  • BPL beam pair link
  • QCL spatial quasi co-locate
  • the method further comprises selecting at least one PRACH resource according to one RS resource from a set of new candidate beam RS resources that has L1-RSRP measurement not smaller than a configured threshold.
  • the method further comprises: receiving at least one of downlink control information (DCI) that is scrambled by a cell-radio network temporary identifier (C-RNTI) as the beam failure response received from the BS; receiving at least one threshold for a layer 1-reference signal received power ( L1-RSRP) measurement of the new candidate beam RS to the UE; and identifying at least one RS resource from a set of new candidate beam RS resources that has L1-RSRP measurement no smaller than the at least one threshold.
  • DCI downlink control information
  • C-RNTI cell-radio network temporary identifier
  • L1-RSRP layer 1-reference signal received power
  • a computer-readable storage medium for storing one or more programs (software modules) may be provided.
  • the one or more programs stored in the computer-readable storage medium may be configured for execution by one or more processors within the electronic device.
  • the at least one program may include instructions that cause the electronic device to perform the methods according to various embodiments of the present disclosure as defined by the appended claims and/or disclosed herein.
  • the programs may be stored in non-volatile memories including a random access memory and a flash memory, a read only memory (ROM), an electrically erasable programmable read only memory (EEPROM), a magnetic disc storage device, a compact disc-ROM (CD-ROM), digital versatile discs (DVDs), or other type optical storage devices, or a magnetic cassette.
  • ROM read only memory
  • EEPROM electrically erasable programmable read only memory
  • CD-ROM compact disc-ROM
  • DVDs digital versatile discs
  • any combination of some or all of the may form a memory in which the program is stored.
  • a plurality of such memories may be included in the electronic device.
  • the programs may be stored in an attachable storage device which is accessible through communication networks such as the Internet, Intranet, local area network (LAN), wide area network (WAN), and storage area network (SAN), or a combination thereof.
  • a storage device may access the electronic device via an external port.
  • a separate storage device on the communication network may access a portable electronic device.
  • a component included in the present disclosure is expressed in the singular or the plural according to a presented detailed embodiment.
  • the singular form or plural form is selected for convenience of description suitable for the presented situation, and various embodiments of the present disclosure are not limited to a single element or multiple elements thereof. Further, either multiple elements expressed in the description may be configured into a single element or a single element in the description may be configured into multiple elements.

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  • Mobile Radio Communication Systems (AREA)

Abstract

La présente invention se rapporte à un système de communication de pré-5ème génération (5G) ou 5G, apte à prendre en charge des débits de données supérieurs à ceux d'un système de communication de 4ème génération (4G), tel qu'un système d'évolution à long terme (LTE). L'invention concerne un procédé d'un équipement utilisateur (UE) pour une procédure de récupération de défaillance de faisceau dans un système de communication sans fil. Le procédé consiste à recevoir, d'une station de base (BS), au moins un signal de référence de détection de défaillance de faisceau (RS) et au moins un nouveau RS de faisceau candidat sur un canal de liaison descendante ; identifier un ensemble de ressources RS comprenant un indice pour ledit au moins un RS de détection de défaillance de faisceau ; identifier un ensemble de ressources RS comprenant un indice pour ledit nouveau faisceau candidat RS ; identifier un ensemble de ressources de commande dédié (CORESET) reçu en provenance de la BS pour une demande de récupération de défaillance de faisceau ; transmettre, à la BS, la demande de récupération de défaillance de faisceau associée à une mesure de qualité du ou des RS de détection de défaillance de faisceau sur un canal d'accès aléatoire physique (PRACH) ; et recevoir, en provenance de la BS, une réponse de défaillance de faisceau en réponse à la demande de récupération de défaillance de faisceau sur la base du CORESET dédié indiqué à l'UE.
PCT/KR2018/004198 2017-04-12 2018-04-10 Procédé et appareil de récupération de faisceau dans un système de communication sans fil Ceased WO2018190617A1 (fr)

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KR1020237012538A KR102836121B1 (ko) 2017-04-12 2018-04-10 무선 통신 시스템에서 빔 복구를 위한 방법 및 장치
KR1020197033209A KR102522645B1 (ko) 2017-04-12 2018-04-10 무선 통신 시스템에서 빔 복구를 위한 방법 및 장치
CN202311302671.9A CN117460049A (zh) 2017-04-12 2018-04-10 无线通信系统中波束恢复的方法和装置
CN201880032907.2A CN110637496B (zh) 2017-04-12 2018-04-10 无线通信系统中波束恢复的方法和装置
EP18784850.2A EP3583814A4 (fr) 2017-04-12 2018-04-10 Procédé et appareil de récupération de faisceau dans un système de communication sans fil

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US201762484653P 2017-04-12 2017-04-12
US62/484,653 2017-04-12
US201762487235P 2017-04-19 2017-04-19
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US201762504902P 2017-05-11 2017-05-11
US62/504,902 2017-05-11
US201762513083P 2017-05-31 2017-05-31
US62/513,083 2017-05-31
US201762522349P 2017-06-20 2017-06-20
US62/522,349 2017-06-20
US201762529918P 2017-07-07 2017-07-07
US62/529,918 2017-07-07
US201762533823P 2017-07-18 2017-07-18
US62/533,823 2017-07-18
US201762543596P 2017-08-10 2017-08-10
US62/543,596 2017-08-10
US201762561003P 2017-09-20 2017-09-20
US62/561,003 2017-09-20
US201762563987P 2017-09-27 2017-09-27
US62/563,987 2017-09-27
US201762572890P 2017-10-16 2017-10-16
US62/572,890 2017-10-16
US201762587210P 2017-11-16 2017-11-16
US62/587,210 2017-11-16
US201762607714P 2017-12-19 2017-12-19
US62/607,714 2017-12-19
US15/945,589 US11134492B2 (en) 2017-04-12 2018-04-04 Method and apparatus for beam recovery in next generation wireless systems
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Cited By (55)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2018228187A1 (fr) 2017-06-16 2018-12-20 Huawei Technologies Co., Ltd. Procédé de réponse à une demande de reprise sur défaillance de faisceau
WO2019033228A1 (fr) 2017-08-12 2019-02-21 Zte Corporation Transmission de référence sans fil
WO2019051487A1 (fr) * 2017-09-11 2019-03-14 Qualcomm Incorporated Système et procédé de sélection de ressources permettant la transmission d'une demande de récupération de défaillance de faisceau
CN110351856A (zh) * 2018-04-03 2019-10-18 英特尔公司 确定用于pdcch的波束的装置和方法
WO2020088334A1 (fr) * 2018-11-01 2020-05-07 北京展讯高科通信技术有限公司 Procédé pour obtenir des informations de point de réception de transmission, terminal utilisateur et support de stockage lisible
US10660063B2 (en) 2017-11-16 2020-05-19 Comcast Cable Communications, Llc Beam paging assistance
WO2020113009A1 (fr) * 2018-11-28 2020-06-04 Intel Corporation Système et procédé pour schéma de récupération de défaillance de faisceau de liaison montante
WO2020145575A1 (fr) * 2019-01-11 2020-07-16 엘지전자 주식회사 Procédé de rapport de défaillance de faisceau d'un terminal dans un système de communication sans fil, et terminal et station de base pour prendre en charge celui-ci
WO2020143726A1 (fr) * 2019-01-10 2020-07-16 华为技术有限公司 Procédé et appareil de transmission de données
CN111436151A (zh) * 2019-01-11 2020-07-21 中国移动通信有限公司研究院 控制信息发送方法、接收方法、终端及网络侧设备
CN111436069A (zh) * 2019-01-11 2020-07-21 华硕电脑股份有限公司 无线通信中用于改进侧链路通信的调度模式的方法和设备
WO2020147086A1 (fr) * 2019-01-17 2020-07-23 华为技术有限公司 Procédé de transmission de signal, appareil associé, et système
WO2020153809A1 (fr) 2019-01-24 2020-07-30 Samsung Electronics Co., Ltd. Procédé et appareil de mesure de canal et rapport sur base de coréinitialisation
WO2020171405A1 (fr) * 2019-02-22 2020-08-27 엘지전자 주식회사 Procédé de gestion de faisceau par ue dans un systѐme de communication sans fil, et ue et station de base le prenant en charge
US10772119B2 (en) 2018-03-30 2020-09-08 Ofinno, Llc Scheduling request based beam failure recovery
WO2020187154A1 (fr) * 2019-03-20 2020-09-24 华为技术有限公司 Procédé et dispositif de récupération de défaillance de liaison
CN111727575A (zh) * 2019-01-23 2020-09-29 Lg电子株式会社 Nr v2x的副链路控制信息的发送
US10798622B2 (en) 2018-02-09 2020-10-06 Comcast Cable Communications, Llc Beam failure recovery in carrier aggregation
WO2020216121A1 (fr) * 2019-04-24 2020-10-29 华为技术有限公司 Procédé d'envoi de demande de récupération en cas de défaillance du faisceau et dispositif terminal
US10855359B2 (en) 2017-08-10 2020-12-01 Comcast Cable Communications, Llc Priority of beam failure recovery request and uplink channels
US10863570B2 (en) 2018-01-09 2020-12-08 Comcast Cable Communications, Llc Beam selection in beam failure recovery request retransmission
CN112187417A (zh) * 2019-07-05 2021-01-05 华硕电脑股份有限公司 用于指示装置到装置通信的时间间隔的方法和设备
US10887939B2 (en) 2017-08-10 2021-01-05 Comcast Cable Communications, Llc Transmission power control for beam failure recovery requests
US10904940B2 (en) 2018-03-30 2021-01-26 Comcast Cable Communications, Llc Configuration for beam failure recovery
WO2021029755A1 (fr) * 2019-08-15 2021-02-18 엘지전자 주식회사 Procédé permettant d'effectuer une procédure de reprise après défaillance de faisceau dans un système de communication sans fil, et dispositif associé
US11012137B2 (en) 2018-08-09 2021-05-18 Comcast Cable Communications, Llc Resource management for beam failure recovery procedures
WO2021104520A1 (fr) * 2019-11-29 2021-06-03 FG Innovation Company Limited Procédé de surveillance d'occasions de radiomessagerie, et dispositif associé
CN112913177A (zh) * 2018-10-19 2021-06-04 Lg电子株式会社 在无线通信系统中发送和接收多个物理下行链路共享信道的方法及用于其的装置
US11039350B2 (en) 2018-04-02 2021-06-15 Comcast Cable Communications, Llc Beam failure recovery
CN112970205A (zh) * 2018-11-01 2021-06-15 康维达无线有限责任公司 非故障小区上的波束故障恢复
CN113016156A (zh) * 2018-11-13 2021-06-22 苹果公司 基于同步信号块的波束故障检测
CN113196857A (zh) * 2018-12-21 2021-07-30 Lg电子株式会社 在无线通信系统中操作终端和基站的方法以及支持其的装置
CN113261213A (zh) * 2019-01-11 2021-08-13 高通股份有限公司 跨载波调度中的默认波束标识和波束故障检测
US11095355B2 (en) 2018-05-10 2021-08-17 Comcast Cable Communications, Llc Prioritization in beam failure recovery procedures
CN113330693A (zh) * 2019-01-30 2021-08-31 苹果公司 下行链路接收信号冲突避免
CN113348633A (zh) * 2019-02-01 2021-09-03 联想（新加坡）私人有限公司 侧链故障检测和恢复
CN113545147A (zh) * 2019-01-09 2021-10-22 株式会社Ntt都科摩 用户终端以及无线通信方法
US11234217B2 (en) 2017-08-11 2022-01-25 Guangdong Oppo Mobile Telecommunications Corp., Ltd. Data processing method and related device
CN114009092A (zh) * 2019-06-21 2022-02-01 株式会社Ntt都科摩 终端
US11277301B2 (en) 2017-09-07 2022-03-15 Comcast Cable Communications, Llc Unified downlink control information for beam management
CN114270920A (zh) * 2019-08-20 2022-04-01 三星电子株式会社 无线通信系统中终端波束失败恢复操作指示方法及装置
CN114268989A (zh) * 2019-01-08 2022-04-01 中兴通讯股份有限公司 无线通信方法、装置和计算机可读介质
US11324064B2 (en) 2018-09-24 2022-05-03 Comcast Cable Communications, Llc Beam failure recovery procedures
CN114503491A (zh) * 2019-10-04 2022-05-13 高通股份有限公司 用于辅小区的波束故障检测参考信号
US11337265B2 (en) 2017-08-10 2022-05-17 Comcast Cable Communications, Llc Beam failure recovery request transmission
US11343735B2 (en) 2018-09-25 2022-05-24 Comcast Cable Communications, Llc Beam configuration for secondary cells
US11419066B2 (en) 2018-02-15 2022-08-16 Comcast Cable Communications, Llc Beam failure report
US11457496B2 (en) 2019-10-04 2022-09-27 Qualcomm Incorporated Beam failure recovery and related timing determination techniques
US11611468B2 (en) 2017-09-28 2023-03-21 Comcast Cable Communications, Llc Beam management with DRX configuration
WO2023131933A1 (fr) * 2022-01-10 2023-07-13 Guangdong Oppo Mobile Telecommunications Corp., Ltd. Procédés et appareil de rétablissement de liaison basé sur l'apprentissage automatique
CN116548038A (zh) * 2020-10-30 2023-08-04 高通股份有限公司 多发送接收点（trp）操作期间的波束恢复
TWI837218B (zh) * 2018-11-14 2024-04-01 美商高通公司 用於初始控制資源集合的傳輸配置指示狀態排序
US11950287B2 (en) 2017-08-10 2024-04-02 Comcast Cable Communications, Llc Resource configuration of beam failure recovery request transmission
US12041594B2 (en) 2018-09-27 2024-07-16 Nokia Technologies Oy Reporting beam failure
US12279326B2 (en) 2017-08-09 2025-04-15 Interdigital Patent Holdings, Inc. Methods and systems for beam recovery and management

Families Citing this family (229)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10541741B2 (en) * 2016-05-26 2020-01-21 Qualcomm Incorporated System and method for beam switching and reporting
US10181891B2 (en) 2016-05-26 2019-01-15 Qualcomm Incorporated System and method for beam switching and reporting
US10651899B2 (en) 2016-05-26 2020-05-12 Qualcomm Incorporated System and method for beam switching and reporting
US10498406B2 (en) * 2016-05-26 2019-12-03 Qualcomm Incorporated System and method for beam switching and reporting
US10601492B2 (en) 2017-01-05 2020-03-24 Futurewei Technologies, Inc. Device/UE-oriented beam recovery and maintenance mechanisms
WO2018128048A1 (fr) * 2017-01-05 2018-07-12 日本電気株式会社 Station de base, dispositif terminal, procédé, programme, et support d'enregistrement
DE112018000358T5 (de) * 2017-03-07 2019-09-26 Intel IP Corporation Techniken für verbessertes strahlmanagement
EP3602808A1 (fr) * 2017-03-24 2020-02-05 Telefonaktiebolaget LM Ericsson (publ) Systèmes et procédés pour déterminer des configurations d'émetteur et de récepteur pour un dispositif sans fil
US10931514B2 (en) * 2017-03-31 2021-02-23 Futurewei Technologies, Inc. System and method for communications beam recovery
US10944613B2 (en) * 2017-04-14 2021-03-09 Lg Electronics Inc. Method and apparatus for performing initial access in wireless communication system
EP3613152A1 (fr) * 2017-04-21 2020-02-26 Telefonaktiebolaget LM Ericsson (PUBL) Formation de faisceau pour un dispositif sans fil
CN109246732B (zh) * 2017-04-28 2020-05-15 维沃移动通信有限公司 波束失败恢复方法和终端
BR112019022945A2 (pt) 2017-05-05 2020-06-09 Ericsson Telefon Ab L M métodos realizados por um equipamento de usuário e por uma estação base, portadora, equipamento de usuário, e, estação base
WO2018201457A1 (fr) * 2017-05-05 2018-11-08 Mediatek Singapore Pte. Ltd. Gestion de déconnexion intermittente dans un système à ondes millimétriques (mmw)
CN110603742A (zh) * 2017-05-05 2019-12-20 摩托罗拉移动有限责任公司 指示波束切换请求
MX2019013304A (es) * 2017-05-14 2020-02-05 Fg innovation co ltd Metodos, dispositivos y sistemas para el refinamiento de haces durante el traspaso.
CN110741705B (zh) * 2017-06-08 2023-09-15 Lg电子株式会社 无线通信系统中由终端执行的下行链路控制信道接收方法以及使用该方法的终端
KR102182601B1 (ko) * 2017-06-16 2020-11-24 엘지전자 주식회사 무선 통신 시스템에서 빔 실패 복구를 수행하는 방법 및 이를 위한 장치
WO2018231003A1 (fr) * 2017-06-16 2018-12-20 주식회사 아이티엘 Procédé et dispositif d'indication de bloc de signal de synchronisation
ES2989709T3 (es) 2017-06-16 2024-11-27 Beijing Xiaomi Mobile Software Co Ltd Métodos y aparatos para el lanzamiento de un contexto de dispositivo inalámbrico
US10660090B2 (en) 2017-06-26 2020-05-19 Qualcomm Incorporated Slot format indicator signaling in wireless communication systems
KR102474522B1 (ko) * 2017-07-10 2022-12-06 삼성전자 주식회사 이동 통신 시스템에서 rsrp을 측정하는 방법 및 장치
CN109257075B (zh) * 2017-07-12 2021-01-26 上海朗帛通信技术有限公司 一种用于无线通信的用户设备、基站中的方法和装置
WO2019024988A1 (fr) * 2017-08-01 2019-02-07 Huawei Technologies Co., Ltd. Dispositif de réception et procédé associé
CN110326320A (zh) * 2017-08-10 2019-10-11 联发科技股份有限公司 物理上行控制信道的波束恢复请求
US10779350B2 (en) * 2017-08-10 2020-09-15 Futurewei Technologies, Inc. Beam failure recovery request
US10952273B2 (en) * 2017-08-10 2021-03-16 At&T Intellectual Property I, L.P. Detecting and correcting radio link failures based on different usage scenarios
US11190261B2 (en) * 2017-08-11 2021-11-30 Telefonaktiebolaget Lm Ericsson (Publ) Connection re-configuration upon beam recovery response
US10555359B2 (en) * 2017-08-11 2020-02-04 Futurewei Technologies, Inc. System and method for beam failure recovery
US10374683B2 (en) * 2017-09-07 2019-08-06 Futurewei Technologies, Inc. Apparatus and method for beam failure recovery
WO2019047152A1 (fr) * 2017-09-08 2019-03-14 Qualcomm Incorporated Techniques et appareils pour améliorer une nouvelle couverture radio
JP7110328B2 (ja) 2017-09-11 2022-08-01 エルジー エレクトロニクス インコーポレイティド 無線通信システムにおけるビーム失敗復旧を行う方法、及びこのための装置
WO2019061073A1 (fr) * 2017-09-27 2019-04-04 Nec Corporation Procédés et appareils de traitement et de transmission de demande de suivi de faisceau
WO2018141163A1 (fr) * 2017-09-30 2018-08-09 北京小米移动软件有限公司 Procédé et appareil de transmission de données
US11252688B2 (en) * 2017-10-02 2022-02-15 Nokia Technologies Oy Beam-specific and non-beam-specific synchronization signal block positions for wireless networks
US11647493B2 (en) * 2017-10-06 2023-05-09 Qualcomm Incorporated Techniques and apparatuses for using a second link for beam failure recovery of a first link
JP2021502730A (ja) * 2017-10-19 2021-01-28 オッポ広東移動通信有限公司Ｇｕａｎｇｄｏｎｇ Ｏｐｐｏ Ｍｏｂｉｌｅ Ｔｅｌｅｃｏｍｍｕｎｉｃａｔｉｏｎｓ Ｃｏｒｐ．， Ｌｔｄ． 無線通信方法及び装置
CN109699034B (zh) * 2017-10-20 2022-03-29 维沃移动通信有限公司 一种波束失败恢复的处理方法及终端
US10784943B2 (en) * 2017-10-23 2020-09-22 Apple, Inc. Beam failure recovery operation
US11743879B2 (en) * 2017-11-03 2023-08-29 Futurewei Technologies, Inc. System and method for indicating wireless channel status
US10447370B2 (en) * 2017-11-07 2019-10-15 Intel IP Corporation Systems, methods and devices for using s-Measure with new radio
KR102343136B1 (ko) * 2017-11-16 2021-12-27 베이징 시아오미 모바일 소프트웨어 컴퍼니 리미티드 대역폭 부분에서의 채널 상태 정보 리포트
CN111356239B (zh) * 2017-11-17 2021-01-01 华为技术有限公司 信号传输方法、相关设备及系统
CN109803298B (zh) * 2017-11-17 2022-10-21 华硕电脑股份有限公司 无线通信系统中控制信道监听行为的方法和设备
US11153800B2 (en) * 2017-11-17 2021-10-19 Asustek Computer Inc. Method and apparatus for User Equipment (UE) monitoring behavior for beam recovery in a wireless communication system
WO2019098798A1 (fr) * 2017-11-17 2019-05-23 엘지전자 주식회사 Procédé de mise en œuvre de reprise sur défaillance de faisceau dans un système de communication sans fil, et dispositif associé
CN109842499B (zh) * 2017-11-24 2021-04-20 华为技术有限公司 一种无线通信方法及装置
US11206596B2 (en) * 2017-11-27 2021-12-21 Asustek Computer Inc. Method and apparatus for reducing interruption of beaming recovery procedure in a wireless communication system
EP3729901A4 (fr) * 2017-12-22 2021-07-07 ZTE Corporation Procédés et dispositif de communication sans fil pour effectuer une récupération en cas de défaillance de faisceau
WO2019134749A1 (fr) * 2018-01-04 2019-07-11 Huawei Technologies Co., Ltd. Gestion de défaillance d'un sous-ensemble de liaisons de paire de faisceaux de desserte
WO2019134085A1 (fr) * 2018-01-04 2019-07-11 Oppo广东移动通信有限公司 Procédé de transmission de données, dispositif terminal, dispositif de réseau et support de stockage informatique
CN110034799B (zh) * 2018-01-11 2023-09-01 华为技术有限公司 通信方法和通信设备
CN111434071B (zh) * 2018-01-11 2024-02-20 富士通株式会社 信号接收装置及方法、通信系统
WO2019138081A1 (fr) * 2018-01-12 2019-07-18 Nokia Technologies Oy Utilisation de mesures d'interférence dans une procédure de récupération de faisceau
US10805148B2 (en) 2018-02-05 2020-10-13 Ofinno, Llc Beam failure recovery request procedure
US10827364B2 (en) 2018-02-14 2020-11-03 Futurewei Technologies, Inc. Phased array antenna system for fast beam searching
US11025348B2 (en) * 2018-02-16 2021-06-01 Qualcomm Incorporated Default radio link monitoring reference signal (RLM-RS) determination procedure in new radio (NR)
WO2019161782A1 (fr) * 2018-02-22 2019-08-29 Fg Innovation Ip Company Limited Procédés et dispositifs de notification de rapport de mesure dans des opérations de faisceau
US11197324B2 (en) * 2018-02-23 2021-12-07 Qualcomm Incorporated NR RACH MSG3 and MSG4 resource configuration for CV2X
CN110289896A (zh) 2018-03-15 2019-09-27 索尼公司 电子装置、无线通信方法以及计算机可读介质
US20190297603A1 (en) * 2018-03-23 2019-09-26 Samsung Electronics Co., Ltd. Method and apparatus for beam management for multi-stream transmission
KR102749267B1 (ko) * 2018-04-02 2025-01-03 광동 오포 모바일 텔레커뮤니케이션즈 코포레이션 리미티드 기준 신호를 확정하는 방법, 네트워크 장치, ue 및 컴퓨터 저장 매체
US10939282B2 (en) * 2018-04-05 2021-03-02 Qualcomm Incorporated Default value selection for medium access control-control element (MAC-CE) based parameter value selection
JP7413274B2 (ja) * 2018-05-10 2024-01-15 富士通株式会社 ビーム指示方法、装置及びシステム
US10979919B2 (en) * 2018-05-10 2021-04-13 Lg Electronics Inc. Method and apparatus for performing beam failure recovery in a wireless communication
CN110475353B (zh) * 2018-05-11 2022-06-28 华为技术有限公司 链路恢复的方法和装置
US20190356399A1 (en) * 2018-05-21 2019-11-21 Qualcomm Incorporated Dynamic search space configuration
US11089625B2 (en) * 2018-05-25 2021-08-10 Futurewei Technologies, Inc. Protection for mode-3 V2X UEs in the ITS band
WO2020001118A1 (fr) * 2018-06-29 2020-01-02 Oppo广东移动通信有限公司 Procédé de transmission de données et dispositif terminal
JP7314994B2 (ja) 2018-07-13 2023-07-26 日本電気株式会社 端末装置によって実行される方法および端末装置
US11196524B2 (en) * 2018-07-18 2021-12-07 Qualcomm Incorporated Multi-beam CSI feedback
US12206607B2 (en) * 2018-07-19 2025-01-21 Qualcomm Incorporated On-demand positioning reference signal (PRS)
US11856422B2 (en) * 2018-07-20 2023-12-26 Beijing Xiaomi Mobile Software Co., Ltd. Beam failure recovery request sending and response methods and devices, and storage medium
US11671941B2 (en) * 2018-07-26 2023-06-06 Lg Electronics Inc. Method and apparatus for transmitting signal by sidelink terminal in wireless communication system
WO2020027547A1 (fr) 2018-07-31 2020-02-06 엘지전자 주식회사 Procédé de surveillance d'un signal de commande par un terminal dans un système de communication sans fil, et terminal utilisant ce procédé
US11457431B2 (en) * 2018-08-03 2022-09-27 FG Innovation Company Limited Sidelink radio resource allocation
KR102192825B1 (ko) * 2018-08-03 2020-12-18 엘지전자 주식회사 공통 자원 블록 그리드에 관계 없는 기준점을 설정하는 방법 및 이를 위한 장치
US11695528B2 (en) 2018-08-10 2023-07-04 Qualcomm Incorporated Delay minimization for CSI-RS and SRS transmission
US11502735B2 (en) * 2018-08-10 2022-11-15 Lg Electronics Inc. Method for transmitting and receiving downlink signal and device for same
US11172386B2 (en) 2018-09-04 2021-11-09 Qualcomm Incorporated Prioritizations during beam failure recovery
WO2020051903A1 (fr) * 2018-09-14 2020-03-19 Oppo广东移动通信有限公司 Procédé et dispositif de traitement destiné à un processus de récupération de liaison et terminal
US11622352B2 (en) 2018-09-28 2023-04-04 At&T Intellectual Property I, L.P. Receiver beamforming and antenna panel switching in advanced networks
US20220123904A1 (en) 2018-09-28 2022-04-21 Mediatek Inc. Shared nack resource for groupcast and multicast in new radio v2x communications
US11265949B2 (en) * 2018-10-08 2022-03-01 Qualcomm Incorporated Fast secondary cell recovery for ultra-reliable low-latency communication
US12035404B2 (en) 2018-10-31 2024-07-09 Comcast Cable Communications, Llc Beam management for cells in wireless communications
CN112703684A (zh) * 2018-10-31 2021-04-23 富士通株式会社 信号发送方法、天线面板信息的指示方法、装置和系统
MX2021004693A (es) * 2018-11-01 2021-06-08 Ntt Docomo Inc Aparato de usuario y aparato de estacion base.
US11272482B2 (en) 2018-11-01 2022-03-08 Qualcomm Incorporated Methods for transmission to achieve robust control and feedback performance in a network
CN112930700B (zh) * 2018-11-02 2023-10-13 联想（新加坡）私人有限公司 用于通过mimo操作来节省用户设备功率的方法和设备
EP3874667A4 (fr) 2018-11-02 2022-08-17 FG Innovation Company Limited Procédé et appareil pour des opérations de multiples points d'émission/réception (trp)
US12349196B2 (en) * 2018-11-07 2025-07-01 Qualcomm Incorporated Robust random access response
CN113169833B (zh) * 2018-11-09 2023-04-07 联想(北京)有限公司 用于基于非码本的pusch传输的srs配置
EP3881613B1 (fr) 2018-11-09 2025-01-15 Lenovo (Beijing) Limited Procédés et appareils pour une commande de puissance
CN115296779B (zh) * 2018-11-12 2024-10-01 中兴通讯股份有限公司 一种确定准共址参考信号的方法和装置
US11184132B2 (en) 2018-11-14 2021-11-23 Mediatek Inc. Transmission configuration indication (TCI)—state indication for non-coherent joint transmission (NCJT) channel state information (CSI) reporting
CN111106915B (zh) 2018-11-16 2021-11-12 维沃移动通信有限公司 无线通信的方法和设备
CN109511156B (zh) * 2018-11-29 2021-06-04 华为技术有限公司 一种选择prach资源的方法及装置
WO2020109997A1 (fr) * 2018-11-30 2020-06-04 Nokia Technologies Oy Reprise sur défaillance de liaison latérale avec mise en forme de faisceau
US10993236B2 (en) * 2018-12-05 2021-04-27 Qualcomm Incorporated Synchronization signal measurement for beam detection
WO2020118723A1 (fr) * 2018-12-14 2020-06-18 Nec Corporation Procédés, dispositifs et support lisible par ordinateur destinés à l'émission d'un signal de référence
EP3667943B1 (fr) * 2018-12-14 2021-03-31 ASUSTek Computer Inc. Procédé et appareil d'indication de faisceaux dans un système de communication sans fil
US11109375B2 (en) 2018-12-17 2021-08-31 Samsung Electronics Co., Ltd. Method and apparatus for configuration of common search space for discovery signal and channel
US11290226B2 (en) 2018-12-19 2022-03-29 Ofinno, Llc Transmission scheme for multiple transmission reception points in a radio system
US11201663B2 (en) * 2018-12-20 2021-12-14 Qualcomm Incorporated Transmission configuration indication determination for a shared data channel
US11546043B2 (en) * 2018-12-20 2023-01-03 Qualcomm Incorporated Quasi co-location reset for a user equipment supporting a single active transmission configuration indication state
CN113228800B (zh) * 2018-12-21 2023-08-01 Lg电子株式会社 在无线通信系统中终端和基站的操作方法以及支持其的装置
BR112021011796A2 (pt) * 2018-12-21 2021-08-31 Ntt Docomo, Inc. Terminal de usuário e método de radiocomunicação para um terminal de usuário
CN111278166B (zh) * 2018-12-27 2022-07-22 维沃移动通信有限公司 一种波束失败处理方法及相关设备
CN111385890B (zh) * 2018-12-29 2023-05-02 成都华为技术有限公司 一种波束失败恢复方法及装置
KR102612338B1 (ko) * 2019-01-10 2023-12-08 지티이 코포레이션 무선 시스템들에서 준-코-로케이션 정보의 시그널링
US12107654B2 (en) 2019-01-10 2024-10-01 Qualcomm Incorporated Beam recovery techniques in beamformed wireless communications
CN111435856B (zh) * 2019-01-11 2021-06-01 成都华为技术有限公司 信号测量方法和通信装置
WO2020143049A1 (fr) * 2019-01-11 2020-07-16 Lenovo (Beijing) Limited Procédé et appareil de reprise après défaillance de faisceau
CN111465114B (zh) * 2019-01-18 2022-02-22 中国信息通信研究院 一种随机接入响应方法和设备
CN111278122B (zh) * 2019-01-25 2023-03-24 维沃移动通信有限公司 波束失败恢复方法、处理方法、终端及网络侧设备
CN111278032B (zh) * 2019-01-25 2022-02-01 维沃移动通信有限公司 Pucch的发送方法、接收方法、终端和网络侧设备
EP3907901B1 (fr) * 2019-02-01 2024-03-27 LG Electronics Inc. Procédé par lequel un terminal rapporte des informations d'état dans un système de communication sans fil, et terminal et station de base pour le prendre en charge
CN111278027B (zh) * 2019-02-02 2021-11-30 维沃移动通信有限公司 节能信号检测方法、资源确定方法及相关设备
US11405088B2 (en) * 2019-02-07 2022-08-02 Qualcomm Incorporated Beam management using channel state information prediction
WO2020163453A1 (fr) * 2019-02-08 2020-08-13 Apple Inc. Systèmes et procédés de retransmission de reprise après défaillance de faisceau d'accès aléatoire sans contention (cfra-bfr) et de détection de défaillance de faisceau inter cc
US11483807B2 (en) * 2019-02-13 2022-10-25 Qualcomm Incorporated Beam training request techniques in beamformed wireless communications
US11611407B2 (en) 2019-02-14 2023-03-21 Qualcomm Incorporated Dynamic switching between different multi-trans mission/reception point schemes
CN113491075B (zh) * 2019-02-15 2024-03-08 Lg电子株式会社 发送上行链路反馈信息的方法以及用户设备和基站
US11356166B2 (en) * 2019-03-01 2022-06-07 Qualcomm Incorporated Apparatus and methods for early termination of beam failure detection for a multi-panel UE
CN113574822B (zh) * 2019-03-13 2023-06-23 中兴通讯股份有限公司 无线通信方法、装置及计算机可读介质
FR3094160B1 (fr) * 2019-03-21 2022-05-06 Continental Automotive Gmbh Procede d’estimation d’un rapport signal sur bruit
US12200512B2 (en) * 2019-03-28 2025-01-14 Apple Inc. Beam failure recovery
US11546897B2 (en) * 2019-03-28 2023-01-03 Mediatek Inc. Control information for wideband operation
US11006395B2 (en) * 2019-03-29 2021-05-11 Qualcomm Incorporated Two stage control channel for peer-to-peer communication
CN111435920B (zh) * 2019-03-29 2022-03-22 维沃移动通信有限公司 多发送接收点trp配置方法、设备及存储介质
CN113892303B (zh) * 2019-03-29 2024-02-13 株式会社Ntt都科摩 终端、无线通信方法、基站以及系统
US11452011B2 (en) 2019-03-29 2022-09-20 Huawei Technologies Co., Ltd. User equipment-centric inter-cell mobility
WO2020226336A1 (fr) 2019-05-03 2020-11-12 Samsung Electronics Co., Ltd. Procédé et ue pour rapporter une mesure d'accessibilité dans un système de communications sans fil
US11658781B2 (en) * 2019-05-03 2023-05-23 Qualcomm Incorporated Techniques for updating reference signals
WO2020231190A1 (fr) * 2019-05-16 2020-11-19 엘지전자 주식회사 Procédé de rapport d'informations de faisceau dans un système de communication sans fil et dispositif pour cela
WO2020232627A1 (fr) * 2019-05-21 2020-11-26 Lenovo (Beijing) Limited Détermination de rapports signal sur interférence
US11533155B2 (en) * 2019-06-07 2022-12-20 Qualcomm Incorporated Triggering demodulation reference signal bundling
WO2020249425A1 (fr) * 2019-06-13 2020-12-17 Sony Corporation Procédés de commande détection de défaillance de faisceau, dispositifs sans fil et nœuds de réseau
CN112087800A (zh) * 2019-06-14 2020-12-15 夏普株式会社 由用户设备执行的方法以及用户设备
CN115473557B (zh) * 2019-06-21 2025-08-22 中国移动通信有限公司研究院 波束切换方法及装置、通信设备
US11533738B2 (en) * 2019-06-28 2022-12-20 Qualcomm Incorporated Joint activation and/or release for multiple configured grant and/or semi-persistent scheduling configurations
CN114097197B (zh) * 2019-06-28 2024-12-03 交互数字专利控股公司 用于执行波束故障恢复的装置、系统、方法和计算机可读介质
US11445456B2 (en) * 2019-07-03 2022-09-13 Samsung Electronics Co., Ltd. Method and apparatus for RMSI reception for low cost UEs in NR
CN112187320B (zh) * 2019-07-05 2022-09-16 大唐移动通信设备有限公司 一种天线端口确定方法和通信设备
CN114128371A (zh) * 2019-07-08 2022-03-01 株式会社Ntt都科摩 终端及通信方法
WO2021006681A1 (fr) * 2019-07-09 2021-01-14 Samsung Electronics Co., Ltd. Procédé et appareil pour transmettre et recevoir une demande de récupération de défaillance de faisceau pour une cellule secondaire
CN112399418B (zh) * 2019-08-02 2022-10-18 华为技术有限公司 用于通信的方法和装置
US12041560B2 (en) * 2019-08-06 2024-07-16 Qualcomm Incorporated Timeline considerations for channel state information reporting of a sidelink channel
US11463208B2 (en) * 2019-08-09 2022-10-04 Qualcomm Incorporated Enhancements for multi-TRP modes
CN112351450B (zh) * 2019-08-09 2022-06-14 成都华为技术有限公司 波束失败恢复方法、设备及系统
JP7299324B2 (ja) * 2019-08-15 2023-06-27 株式会社Ｎｔｔドコモ 端末、無線通信方法及びシステム
US11139882B2 (en) 2019-08-16 2021-10-05 Nokia Technologies Oy Enhanced beam adjustment procedure for beam-based operation
CN114391266B (zh) * 2019-09-20 2025-01-24 株式会社Ntt都科摩 终端
US12418805B2 (en) * 2019-09-24 2025-09-16 Qualcomm Incorporated Beam failure detection (BFD) behavior after receiving beam failure recovery (BFR) response
CN112584443B (zh) * 2019-09-27 2025-02-07 苹果公司 辅助小区链路恢复请求传输
EP3799518A1 (fr) * 2019-09-27 2021-03-31 Apple Inc. Transmission d'une requête de récupération d'une liaison de cellules secondaires
US10897740B1 (en) * 2019-10-01 2021-01-19 Qualcomm Incorporated Methods and devices for facilitating path loss estimations for transmit power control
CN114631399B (zh) * 2019-10-03 2023-09-26 欧芬诺有限责任公司 用于两步随机接入程序的不连续接收
US10973044B1 (en) * 2019-10-03 2021-04-06 Qualcomm Incorporated Default spatial relation for SRS/PUCCH
US11546958B2 (en) 2019-10-11 2023-01-03 Qualcomm Incorporated Beam failure recovery response
WO2021072602A1 (fr) * 2019-10-14 2021-04-22 华为技术有限公司 Procédé et appareil de détection de défaillance de liaison
US11617168B2 (en) * 2019-10-18 2023-03-28 Qualcomm Incorporated Transmission configuration indicator state operation for multi-point transmission
CN114866985A (zh) * 2019-10-25 2022-08-05 上海朗帛通信技术有限公司 一种被用于无线通信的节点中的方法和装置
US11553489B2 (en) * 2019-10-30 2023-01-10 Qualcomm Incorporated SFN transmission procedure for FR2
US11290174B2 (en) * 2019-10-31 2022-03-29 Qualcomm Incorporated Beam selection for communication in a multi-transmit-receive point deployment
US11924837B2 (en) * 2019-11-15 2024-03-05 Qualcomm Incorporated Techniques for physical uplink control channel beam failure recovery reselection
CN114930941B (zh) * 2020-01-10 2025-08-15 高通股份有限公司 鲁棒的基于下行链路控制信息的快速波束指示
US11405094B2 (en) * 2020-01-16 2022-08-02 Qualcomm Incorporated Default quasi co-location assumption after beam failure recovery for single-downlink control information-based multiple transmit receive point communication
US12301330B2 (en) * 2020-01-31 2025-05-13 Qualcomm Incorporated Uplink beam failure report for a default uplink beam
US11916725B2 (en) * 2020-02-07 2024-02-27 Qualcomm Incorporated Determining a duration of a resetting time period after uplink beam failure
CN113260001B (zh) * 2020-02-12 2022-06-10 维沃移动通信有限公司 关联邻小区的方法和设备
US11924895B2 (en) * 2020-02-14 2024-03-05 Qualcomm Incorporated Techniques for new radio layer two relay
SG10202001583TA (en) * 2020-02-22 2021-09-29 Panasonic Ip Corp America Beam failure recovery for single dci-based m-trp urllc transmissions
CN113300807B (zh) * 2020-02-24 2023-03-24 维沃移动通信有限公司 信息检测、信息发送方法、终端和网络设备
US11678392B2 (en) * 2020-03-21 2023-06-13 Qualcomm Incorporated Sidelink communication recovery
EP4007203B1 (fr) * 2020-03-23 2024-08-14 Guangdong Oppo Mobile Telecommunications Corp., Ltd. Procédé et appareil de sélection de ressources, dispositif électronique et support de stockage
CN115918233B (zh) * 2020-04-08 2025-04-11 上海诺基亚贝尔股份有限公司 由数据传输触发的波束报告
WO2021203304A1 (fr) * 2020-04-08 2021-10-14 Apple Inc. Mécanismes améliorés d'accès au canal dans une communication radio sans fil partagée
KR20230008721A (ko) 2020-04-08 2023-01-16 아이디에이씨 홀딩스, 인크. 다중 셀 및/또는 다중 전송/수신 지점과 관련된 빔 관리를 위한 방법, 장치 및 시스템
US11743112B2 (en) * 2020-05-12 2023-08-29 Qualcomm Incorporated UE requested BFD/BFR reference signal
US12323218B2 (en) 2020-05-26 2025-06-03 Qualcomm Incorporated Beam failure recovery techniques for multiple transmission-reception points in a secondary cell
US11791888B2 (en) 2020-06-24 2023-10-17 FG Innovation Company Limited Method and user equipment for wireless communication in wireless communication system
CN113993089B (zh) * 2020-07-27 2023-08-04 大唐移动通信设备有限公司 一种广播数据传输的方法和装置及设备
EP4190091A4 (fr) * 2020-07-31 2024-05-01 Qualcomm Incorporated Association du point de réception de transmission à un ensemble de ressources de commande
KR20220017636A (ko) * 2020-08-05 2022-02-14 삼성전자주식회사 차세대 이동 통신 시스템에서 plmn 재선택 시 초기 측정 결과를 처리하는 방법 및 장치
US11750268B2 (en) 2020-08-05 2023-09-05 Samsung Electronics Co., Ltd. Systems, methods, and apparatus for inactive state beam failure recovery
WO2022029975A1 (fr) * 2020-08-06 2022-02-10 株式会社Ｎｔｔドコモ Terminal, procédé de communication radio et station de base
CN114071535A (zh) * 2020-08-07 2022-02-18 华为技术有限公司 一种通信方法及装置
WO2022036502A1 (fr) * 2020-08-17 2022-02-24 Qualcomm Incorporated Procédés et appareil de synchronisation de liaison montante et d'ajustement de faisceau avec des ressources de liaison montante préconfigurées
JP7587687B2 (ja) * 2020-08-24 2024-11-20 レノボ・（ベイジン）・リミテッド サイドリンクにおけるビーム障害検出および回復のための方法および装置
CN116601891B (zh) * 2020-08-28 2025-02-28 欧芬诺有限责任公司 控制信道重复中的无线电链路监测的无线设备、基站和介质
EP3968697A1 (fr) * 2020-09-11 2022-03-16 Nokia Technologies Oy Rapport de défaillance de faisceau
US11570637B2 (en) * 2020-09-15 2023-01-31 Qualcomm Incorporated Managing beam failure recovery using digital beamforming
CN114258145B (zh) * 2020-09-21 2023-08-29 大唐移动通信设备有限公司 随机接入方法、装置、基站、终端和存储介质
US12069760B2 (en) * 2020-09-25 2024-08-20 Qualcomm Incorporated Response for TRP specific BFRQ and beam reset
WO2022071672A1 (fr) * 2020-09-29 2022-04-07 엘지전자 주식회사 Procédé et dispositif permettant de récupérer une défaillance de faisceau dans un système de communication sans fil
KR102787534B1 (ko) * 2020-10-02 2025-03-26 텔레폰악티에볼라겟엘엠에릭슨(펍) Ue-대-네트워크 릴레이 액세스를 위한 키 관리
US11943037B2 (en) 2020-10-05 2024-03-26 Samsung Electronics Co., Ltd. Method and apparatus for beam failure recovery in a wireless communication system
CN114389765B (zh) * 2020-10-16 2023-09-22 维沃移动通信有限公司 前导序列的映射方法、装置及终端
CN114501626A (zh) * 2020-10-23 2022-05-13 大唐移动通信设备有限公司 消息处理方法、装置、终端设备、网络设备及存储介质
US20220132517A1 (en) * 2020-10-23 2022-04-28 Samsung Electronics Co., Ltd. Method and apparatus for partial beam failure recovery in a wireless communications system
CN114501506B (zh) * 2020-10-23 2024-08-16 大唐移动通信设备有限公司 波束失败处理方法、终端及网络设备
WO2022086778A1 (fr) * 2020-10-23 2022-04-28 Mediatek Inc. Procédé de signalement de défaillance de faisceau
EP4270809A4 (fr) * 2020-12-22 2024-11-20 LG Electronics Inc. Procédé et dispositif permettant d'effectuer une reprise après défaillance de faisceau dans un système de communication sans fil
EP4020823A1 (fr) * 2020-12-22 2022-06-29 INTEL Corporation Système distribué de casque radio
EP4020853A1 (fr) * 2020-12-24 2022-06-29 INTEL Corporation Système de casque audio distribué
WO2022155514A1 (fr) * 2021-01-15 2022-07-21 Intel Corporation Détection et récupération améliorées relatives à une défaillance de faisceau associée à de multiples points d'émission
CN117354821A (zh) * 2021-01-18 2024-01-05 上海朗帛通信技术有限公司 一种被用于无线通信的节点中的方法和装置
CN114828035B (zh) * 2021-01-18 2024-06-11 上海朗帛通信技术有限公司 一种被用于无线通信的节点中的方法和装置
CN114826451A (zh) * 2021-01-21 2022-07-29 中国移动通信有限公司研究院 一种信息上报、接收方法、终端及网络设备
CN116746201A (zh) 2021-01-26 2023-09-12 株式会社Ntt都科摩 终端、基站以及无线通信方法
CN115021874B (zh) * 2021-03-03 2024-12-17 上海朗帛通信技术有限公司 一种被用于无线通信的节点中的方法和装置
US20220312235A1 (en) * 2021-03-24 2022-09-29 Qualcomm Incorporated Cause-oriented beam failure determination
WO2022205282A1 (fr) * 2021-04-01 2022-10-06 Nec Corporation Procédés, dispositifs et supports de stockage informatiques pour la communication
US20220353131A1 (en) * 2021-04-29 2022-11-03 Qualcomm Incorporated Uplink beam continuation for downlink beam failure recovery
CN115589792A (zh) * 2021-05-06 2023-01-10 北京小米移动软件有限公司 波束失败恢复bfr方法、非周期csi-rs的发送方法及装置
US11387960B2 (en) 2021-06-14 2022-07-12 Ultralogic 6G, Llc Downlink demarcations for rapid, reliable 5G/6G messaging
WO2022266965A1 (fr) * 2021-06-24 2022-12-29 Nokia Shanghai Bell Co., Ltd. Rétablissement après défaillance de faisceau
US20240032083A1 (en) * 2021-07-27 2024-01-25 Apple Inc. Latency reduction for beam failure recovery
US20240356623A1 (en) * 2021-08-03 2024-10-24 Lenovo (Beijing) Limited Method and apparatus for beam determination
WO2023031791A1 (fr) * 2021-09-01 2023-03-09 Guangdong Oppo Mobile Telecommunications Corp., Ltd. Procédés et appareil de détection d'état de faisceau
CN118020333A (zh) * 2021-09-30 2024-05-10 高通股份有限公司 每传输和接收点（trp）波束故障报告
US12199708B2 (en) * 2022-01-04 2025-01-14 Qualcomm Incorporated Transmission diversity scheme requests for sidelink
US20250088879A1 (en) * 2022-03-31 2025-03-13 Qualcomm Incorporated Metrics and report quantities for cross frequency range predictive beam management
US20240063931A1 (en) * 2022-08-15 2024-02-22 Samsung Electronics Co., Ltd. Transmission mode adaptation in new radio with ai/ml assistance
KR20240136111A (ko) * 2023-03-06 2024-09-13 삼성전자주식회사 인코딩 데이터를 제공하는 송신 회로, 이를 포함하는 전자 장치, 및 이를 포함하는 전자 장치의 동작하는 방법
US20240314599A1 (en) * 2023-03-17 2024-09-19 Qualcomm Incorporated Beam failure recovery in sidelink communications
US20250274246A1 (en) * 2024-02-23 2025-08-28 Samsung Electronics Co., Ltd. Measurement reference signals for ue-initiated beam management
WO2025171746A1 (fr) * 2024-12-19 2025-08-21 Lenovo (Beijing) Limited Reprise après défaillance de faisceau

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2017022902A1 (fr) 2015-08-03 2017-02-09 Samsung Electronics Co., Ltd. Procédé et appareil pour l'accès initial dans un système de communication sans fil
WO2017024516A1 (fr) * 2015-08-11 2017-02-16 Telefonaktiebolaget Lm Ericsson (Publ) Reprise après une défaillance de faisceau

Family Cites Families (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102845122B9 (zh) * 2009-09-25 2016-06-29 黑莓有限公司 用于多载波网络操作的系统和方法
KR101227520B1 (ko) * 2010-07-09 2013-01-31 엘지전자 주식회사 다중 안테나 무선 통신 시스템에서 상향링크 참조 신호 송신 방법 및 이를 위한 장치
KR101923551B1 (ko) * 2011-06-22 2018-11-30 삼성전자주식회사 무선 통신 시스템에서 망 진입을 위한 장치 및 방법
WO2014116928A1 (fr) * 2013-01-25 2014-07-31 Interdigital Patent Holdings, Inc. Procédés et appareil de conformation verticale de faisceau
US9083462B2 (en) * 2013-02-25 2015-07-14 Loki Systems LLC Optical communications system
EP2987385A2 (fr) * 2013-04-15 2016-02-24 Interdigital Patent Holdings, Inc. Techniques de reception discontinue (drx) pour une connectivite double a onde millimetrique (mmw)
CN104703212B (zh) * 2013-12-06 2019-07-23 索尼公司 无线通信系统中的装置、无线通信系统和方法
SG11201607912QA (en) * 2014-03-25 2016-10-28 Ericsson Telefon Ab L M System and method for beam-based physical random-access
US20190104549A1 (en) * 2014-11-26 2019-04-04 Idac Holdings, Inc. Initial access in high frequency wireless systems
US9907093B2 (en) * 2014-12-29 2018-02-27 Electronics And Telecommunications Research Institute Method and apparatus for random access in communications system
US10306597B2 (en) * 2015-07-21 2019-05-28 Samsung Electronics Co., Ltd. Method and apparatus for beam-level radio resource management and mobility in cellular network
US20170026962A1 (en) * 2015-07-23 2017-01-26 Futurewei Technologies, Inc. Beam detection and tracking in wireless networks
JP7102148B2 (ja) * 2016-02-04 2022-07-19 株式会社Ｎｔｔドコモ 端末、プリアンブル送信方法、基地局、及び通信システム
US10425200B2 (en) * 2016-04-13 2019-09-24 Qualcomm Incorporated System and method for beam adjustment request
US10396881B2 (en) * 2016-06-10 2019-08-27 Qualcomm Incorporated RACH design for beamformed communications
US11234273B2 (en) * 2016-08-12 2022-01-25 Qualcomm Incorporated RACH conveyance of DL synchronization beam information for various DL-UL correspondence states
US20180199226A1 (en) * 2017-01-06 2018-07-12 Asustek Computer Inc. Method and apparatus for triggering a beam state information report in a wireless communication system
US10542545B2 (en) * 2017-02-06 2020-01-21 Mediatek Inc. Beam failure recovery mechanism for multi-beam operation
EP4462875A3 (fr) * 2017-02-27 2025-01-15 Apple Inc. Conditions de sortie pour transferts conditionnels et estimation d'état de mobilité basée sur un faisceau
WO2018173239A1 (fr) * 2017-03-23 2018-09-27 株式会社Ｎｔｔドコモ Terminal d'utilisateur et procédé de communication sans fil
US11888570B2 (en) * 2017-03-23 2024-01-30 Ntt Docomo, Inc. User terminal and radio communication method

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2017022902A1 (fr) 2015-08-03 2017-02-09 Samsung Electronics Co., Ltd. Procédé et appareil pour l'accès initial dans un système de communication sans fil
WO2017024516A1 (fr) * 2015-08-11 2017-02-16 Telefonaktiebolaget Lm Ericsson (Publ) Reprise après une défaillance de faisceau

Non-Patent Citations (14)

* Cited by examiner, † Cited by third party
Title
"E-UTRA, Medium Access Control (MAC) protocol specification", 3GPP TS 36.321
"E-UTRA, Multiplexing and Channel coding", 3GPP TS 36.212
"E-UTRA, Physical channels and modulation", 3GPP TS 36.211
"E-UTRA, Physical Layer Procedures", 3GPP TS 36.213
"E-UTRA, Radio Resource Control (RRC) protocol specification", GPP TS 36.331
"Feasibility Study on New Services and Markets Technology Enablers", 3GPP TR 22.891
"On Beam Recovery Mechanism", R1-1701944, 3GPP TSG RAN WG1 MEETING #88, 7 February 2017 (2017-02-07), Athens, Greece, XP051220921 *
3GPP TR 22.891
ERICSSON: "Summary of e-mail discussions on downlink control signaling", R1-1701036, TSG-RAN WG1 NR ADHOC, 13 January 2017 (2017-01-13), Spokane, WA, USA, XP051203380 *
INTERDIGITAL COMMUNICATIONS: "RLM for NR", 3GPP DRAFT; R2-1702875
MEDIATEK ET AL.: "WF on Beam Failure Recovery", R1-1706633, 3GPP TSG RAN WG1 MEETING #88B, 9 April 2017 (2017-04-09), Spokane, USA, XP051252855 *
MEDIATEK: "Summary of Views on beam failure recovery", R1-1706654, 3GPP TSG RAN WG1 MEETING #88B, 9 April 2017 (2017-04-09), Spokane, USA, XP051252874 *
NTT DOCOMO ET AL.: "Further views on mechanism to recover from beam failure", 3GPP DRAFT; RL-1705719
ZTE ET AL.: "Discussion on beam recovery mechanism", 3GPP DRAFT, pages RI-1704400

Cited By (120)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3616330A4 (fr) * 2017-06-16 2020-04-01 Huawei Technologies Co., Ltd. Procédé de réponse à une demande de reprise sur défaillance de faisceau
WO2018228187A1 (fr) 2017-06-16 2018-12-20 Huawei Technologies Co., Ltd. Procédé de réponse à une demande de reprise sur défaillance de faisceau
US12279326B2 (en) 2017-08-09 2025-04-15 Interdigital Patent Holdings, Inc. Methods and systems for beam recovery and management
US11950309B2 (en) 2017-08-10 2024-04-02 Comcast Cable Communications, Llc Transmission power control for beam failure recovery requests
US11949487B2 (en) 2017-08-10 2024-04-02 Comcast Cable Communications, Llc Priority of beam failure recovery request and uplink channels
US11425774B2 (en) 2017-08-10 2022-08-23 Comcast Cable Communications, Llc Transmission power control for beam failure recovery requests
US10887939B2 (en) 2017-08-10 2021-01-05 Comcast Cable Communications, Llc Transmission power control for beam failure recovery requests
US10855359B2 (en) 2017-08-10 2020-12-01 Comcast Cable Communications, Llc Priority of beam failure recovery request and uplink channels
US11165485B2 (en) 2017-08-10 2021-11-02 Comcast Cable Communications, Llc Priority of beam failure recovery request and uplink channels
US11870724B2 (en) 2017-08-10 2024-01-09 Comcast Cable Communications, Llc Beam failure recovery request transmission
US11337265B2 (en) 2017-08-10 2022-05-17 Comcast Cable Communications, Llc Beam failure recovery request transmission
US11950287B2 (en) 2017-08-10 2024-04-02 Comcast Cable Communications, Llc Resource configuration of beam failure recovery request transmission
US12341719B2 (en) 2017-08-10 2025-06-24 Comcast Cable Communications, Llc Beam failure recovery request transmission
US11234217B2 (en) 2017-08-11 2022-01-25 Guangdong Oppo Mobile Telecommunications Corp., Ltd. Data processing method and related device
WO2019033228A1 (fr) 2017-08-12 2019-02-21 Zte Corporation Transmission de référence sans fil
EP3665931A4 (fr) * 2017-08-12 2020-09-02 ZTE Corporation Transmission de référence sans fil
US11350476B2 (en) 2017-08-12 2022-05-31 Zte Corporation Techniques to restore wireless communication using wireless reference transmission
US11277301B2 (en) 2017-09-07 2022-03-15 Comcast Cable Communications, Llc Unified downlink control information for beam management
US11943641B2 (en) 2017-09-11 2024-03-26 Qualcomm Incorporated System and method for selecting resources to transmit a beam failure recovery request
US10880761B2 (en) 2017-09-11 2020-12-29 Qualcomm Incorporated System and method for selecting resources to transmit a beam failure recovery request
WO2019051487A1 (fr) * 2017-09-11 2019-03-14 Qualcomm Incorporated Système et procédé de sélection de ressources permettant la transmission d'une demande de récupération de défaillance de faisceau
US11611468B2 (en) 2017-09-28 2023-03-21 Comcast Cable Communications, Llc Beam management with DRX configuration
US12081390B2 (en) 2017-09-28 2024-09-03 Comcast Cable Communications, Llc Beam management with DRX configuration
US11240780B2 (en) 2017-11-16 2022-02-01 Comcast Cable Communications, Llc Beam paging assistance
US11696256B2 (en) 2017-11-16 2023-07-04 Comcast Cable Communications, Llc Beam selection for paging
US10660063B2 (en) 2017-11-16 2020-05-19 Comcast Cable Communications, Llc Beam paging assistance
US12108478B2 (en) 2018-01-09 2024-10-01 Comcast Cable Communications, Llc Downlink beam failure recovery
US11368996B2 (en) 2018-01-09 2022-06-21 Comcast Cable Communications, Llc Resource selection in beam failure recovery transmissions
US10863570B2 (en) 2018-01-09 2020-12-08 Comcast Cable Communications, Llc Beam selection in beam failure recovery request retransmission
US11490442B2 (en) 2018-01-09 2022-11-01 Comcast Cable Communications, Llc Downlink partial beam failure recovery
US12267902B2 (en) 2018-01-09 2025-04-01 Comcast Cable Communications, Llc Resource selection in beam failure recovery transmissions
US10798622B2 (en) 2018-02-09 2020-10-06 Comcast Cable Communications, Llc Beam failure recovery in carrier aggregation
US11678235B2 (en) 2018-02-09 2023-06-13 Comcast Cable Communications, Llc Beam failure recovery procedure in carrier aggregation
US11419066B2 (en) 2018-02-15 2022-08-16 Comcast Cable Communications, Llc Beam failure report
US11368971B2 (en) 2018-03-30 2022-06-21 Resmed Inc. Scheduling request for beam failure recovery and buffer status reporting
US11310859B2 (en) 2018-03-30 2022-04-19 Comcast Cable Communications, Llc Configuration for beam failure recovery
US10904940B2 (en) 2018-03-30 2021-01-26 Comcast Cable Communications, Llc Configuration for beam failure recovery
US11723103B2 (en) 2018-03-30 2023-08-08 Comcast Cable Communications, Llc Configuration for beam failure recovery
US12160921B2 (en) 2018-03-30 2024-12-03 Comcast Cable Communications, Llc Configuration for beam failure recovery
US10772119B2 (en) 2018-03-30 2020-09-08 Ofinno, Llc Scheduling request based beam failure recovery
US11696292B2 (en) 2018-03-30 2023-07-04 Resmed Inc. Scheduling request for beam failure recovery and buffer status reporting
US11039350B2 (en) 2018-04-02 2021-06-15 Comcast Cable Communications, Llc Beam failure recovery
US11882488B2 (en) 2018-04-02 2024-01-23 Comcast Cable Communications, Llc Beam failure recovery
CN110351856A (zh) * 2018-04-03 2019-10-18 英特尔公司 确定用于pdcch的波束的装置和方法
US12034511B2 (en) 2018-05-10 2024-07-09 Comcast Cable Communications, Llc Prioritization in beam failure recovery procedures
US11095355B2 (en) 2018-05-10 2021-08-17 Comcast Cable Communications, Llc Prioritization in beam failure recovery procedures
US11936459B2 (en) 2018-08-09 2024-03-19 Comcast Cable Communications, Llc Resource management for beam failure recovery procedures
US12199728B2 (en) 2018-08-09 2025-01-14 Comcast Cable Communications, Llc Resource management for beam failure recovery procedures
US11012137B2 (en) 2018-08-09 2021-05-18 Comcast Cable Communications, Llc Resource management for beam failure recovery procedures
US11627627B2 (en) 2018-09-24 2023-04-11 Comcast Cable Communications, Llc Beam failure recovery procedures
US12317357B2 (en) 2018-09-24 2025-05-27 Comcast Cable Communications, Llc Beam failure recovery procedures
US11324064B2 (en) 2018-09-24 2022-05-03 Comcast Cable Communications, Llc Beam failure recovery procedures
US11825364B2 (en) 2018-09-25 2023-11-21 Comcast Cable Communications, Llc Beam configuration for secondary cells
US12089103B2 (en) 2018-09-25 2024-09-10 Comcast Cable Communications, Llc Beam configuration for secondary cells
US11343735B2 (en) 2018-09-25 2022-05-24 Comcast Cable Communications, Llc Beam configuration for secondary cells
US12041594B2 (en) 2018-09-27 2024-07-16 Nokia Technologies Oy Reporting beam failure
CN112913177A (zh) * 2018-10-19 2021-06-04 Lg电子株式会社 在无线通信系统中发送和接收多个物理下行链路共享信道的方法及用于其的装置
US12016031B2 (en) 2018-10-19 2024-06-18 Lg Electronics Inc. Method for transmitting and receiving plurality of physical downlink shared channels in wireless communication system, and device for same
CN112913177B (zh) * 2018-10-19 2023-11-14 Lg电子株式会社 在无线通信系统中发送和接收多个物理下行链路共享信道的方法及用于其的装置
CN112970205B (zh) * 2018-11-01 2024-04-19 交互数字专利控股公司 非故障小区上的波束故障恢复
US12101757B2 (en) 2018-11-01 2024-09-24 Beijing Unisoc Communications Technology Co., Ltd. Method for obtaining transmission reception point information, user terminal, and readable storage medium
US12149317B2 (en) 2018-11-01 2024-11-19 Interdigital Patent Holdings, Inc. Beam failure recovery on a non-failed cell
WO2020088334A1 (fr) * 2018-11-01 2020-05-07 北京展讯高科通信技术有限公司 Procédé pour obtenir des informations de point de réception de transmission, terminal utilisateur et support de stockage lisible
CN112970205A (zh) * 2018-11-01 2021-06-15 康维达无线有限责任公司 非故障小区上的波束故障恢复
CN113016156A (zh) * 2018-11-13 2021-06-22 苹果公司 基于同步信号块的波束故障检测
CN113016156B (zh) * 2018-11-13 2024-05-03 苹果公司 基于同步信号块的波束故障检测系统、用户装备及存储介质
TWI837218B (zh) * 2018-11-14 2024-04-01 美商高通公司 用於初始控制資源集合的傳輸配置指示狀態排序
WO2020113009A1 (fr) * 2018-11-28 2020-06-04 Intel Corporation Système et procédé pour schéma de récupération de défaillance de faisceau de liaison montante
CN113196857B (zh) * 2018-12-21 2023-04-25 Lg电子株式会社 在无线通信系统中操作终端和基站的方法以及支持其的装置
CN113196857A (zh) * 2018-12-21 2021-07-30 Lg电子株式会社 在无线通信系统中操作终端和基站的方法以及支持其的装置
US12267748B2 (en) 2019-01-08 2025-04-01 Zte Corporation Wireless link recovery
CN114268989B (zh) * 2019-01-08 2024-04-02 中兴通讯股份有限公司 无线通信方法、装置和计算机可读介质
CN114268989A (zh) * 2019-01-08 2022-04-01 中兴通讯股份有限公司 无线通信方法、装置和计算机可读介质
CN113545147A (zh) * 2019-01-09 2021-10-22 株式会社Ntt都科摩 用户终端以及无线通信方法
US12238728B2 (en) 2019-01-10 2025-02-25 Huawei Technologies Co., Ltd. Data transmission method and apparatus based on a repeat transmission scheme
WO2020143726A1 (fr) * 2019-01-10 2020-07-16 华为技术有限公司 Procédé et appareil de transmission de données
US12015999B2 (en) 2019-01-11 2024-06-18 Qualcomm Incorporated Default beam identification and beam failure detection in cross carrier scheduling
KR20200088226A (ko) * 2019-01-11 2020-07-22 아서스테크 컴퓨터 인코포레이션 무선 통신 시스템에 있어서 사이드링크 통신 스케줄링 모드를 개선하는 방법 및 장치
CN113261213B (zh) * 2019-01-11 2024-07-23 高通股份有限公司 跨载波调度中的默认波束标识和波束故障检测
CN113261213A (zh) * 2019-01-11 2021-08-13 高通股份有限公司 跨载波调度中的默认波束标识和波束故障检测
US12035164B2 (en) 2019-01-11 2024-07-09 Lg Electronics Inc. Method for reporting beam failure of terminal in wireless communication system, and terminal and base station for supporting same
US12035300B2 (en) 2019-01-11 2024-07-09 China Mobile Communication Co., Ltd Research Institute Control information sending method and receiving method, terminal, and network side device
KR102353396B1 (ko) 2019-01-11 2022-01-19 아서스테크 컴퓨터 인코포레이션 무선 통신 시스템에 있어서 사이드링크 통신 스케줄링 모드를 개선하는 방법 및 장치
CN111436069B (zh) * 2019-01-11 2023-05-02 华硕电脑股份有限公司 无线通信中用于改进侧链路通信的调度模式的方法和设备
CN111436151B (zh) * 2019-01-11 2021-10-29 中国移动通信有限公司研究院 控制信息发送方法、接收方法、终端及网络侧设备
CN111436151A (zh) * 2019-01-11 2020-07-21 中国移动通信有限公司研究院 控制信息发送方法、接收方法、终端及网络侧设备
CN111436069A (zh) * 2019-01-11 2020-07-21 华硕电脑股份有限公司 无线通信中用于改进侧链路通信的调度模式的方法和设备
WO2020145575A1 (fr) * 2019-01-11 2020-07-16 엘지전자 주식회사 Procédé de rapport de défaillance de faisceau d'un terminal dans un système de communication sans fil, et terminal et station de base pour prendre en charge celui-ci
WO2020147086A1 (fr) * 2019-01-17 2020-07-23 华为技术有限公司 Procédé de transmission de signal, appareil associé, et système
CN111727575B (zh) * 2019-01-23 2023-08-04 Lg电子株式会社 Nr v2x的副链路控制信息的发送
CN111727575A (zh) * 2019-01-23 2020-09-29 Lg电子株式会社 Nr v2x的副链路控制信息的发送
WO2020153809A1 (fr) 2019-01-24 2020-07-30 Samsung Electronics Co., Ltd. Procédé et appareil de mesure de canal et rapport sur base de coréinitialisation
US11917662B2 (en) 2019-01-24 2024-02-27 Samsung Electronics Co., Ltd. Method and apparatus for channel measurement and reporting in CORESET basis
US11350418B2 (en) 2019-01-24 2022-05-31 Samsung Electronics Co., Ltd. Method and apparatus for channel measurement and reporting in coreset basis
EP3881624A4 (fr) * 2019-01-24 2022-01-26 Samsung Electronics Co., Ltd. Procédé et appareil de mesure de canal et rapport sur base de coréinitialisation
CN113330693A (zh) * 2019-01-30 2021-08-31 苹果公司 下行链路接收信号冲突避免
US12150039B2 (en) 2019-01-30 2024-11-19 Apple Inc. Downlink reception signal collision avoidance
CN113348633A (zh) * 2019-02-01 2021-09-03 联想（新加坡）私人有限公司 侧链故障检测和恢复
WO2020171405A1 (fr) * 2019-02-22 2020-08-27 엘지전자 주식회사 Procédé de gestion de faisceau par ue dans un systѐme de communication sans fil, et ue et station de base le prenant en charge
US12309820B2 (en) 2019-02-22 2025-05-20 Lg Electronics Inc. Method for performing beam management by UE in wireless communication system, and UE and base station supporting same
CN111726208B (zh) * 2019-03-20 2021-11-19 华为技术有限公司 链路失败恢复的方法和装置
US11991541B2 (en) 2019-03-20 2024-05-21 Huawei Technologies Co., Ltd. Link failure recovery method and apparatus
CN111726208A (zh) * 2019-03-20 2020-09-29 华为技术有限公司 链路失败恢复的方法和装置
WO2020187154A1 (fr) * 2019-03-20 2020-09-24 华为技术有限公司 Procédé et dispositif de récupération de défaillance de liaison
WO2020216121A1 (fr) * 2019-04-24 2020-10-29 华为技术有限公司 Procédé d'envoi de demande de récupération en cas de défaillance du faisceau et dispositif terminal
CN114009092B (zh) * 2019-06-21 2024-05-24 株式会社Ntt都科摩 终端
CN114009092A (zh) * 2019-06-21 2022-02-01 株式会社Ntt都科摩 终端
CN112187417A (zh) * 2019-07-05 2021-01-05 华硕电脑股份有限公司 用于指示装置到装置通信的时间间隔的方法和设备
WO2021029755A1 (fr) * 2019-08-15 2021-02-18 엘지전자 주식회사 Procédé permettant d'effectuer une procédure de reprise après défaillance de faisceau dans un système de communication sans fil, et dispositif associé
US11824614B2 (en) 2019-08-15 2023-11-21 Lg Electronics Inc. Method for performing beam failure recovery procedure in wireless communication system, and device therefor
US11539423B2 (en) 2019-08-15 2022-12-27 Lg Electronics Inc. Method for performing beam failure recovery procedure in wireless communication system, and device therefor
CN114270920A (zh) * 2019-08-20 2022-04-01 三星电子株式会社 无线通信系统中终端波束失败恢复操作指示方法及装置
US11457496B2 (en) 2019-10-04 2022-09-27 Qualcomm Incorporated Beam failure recovery and related timing determination techniques
US12082191B2 (en) 2019-10-04 2024-09-03 Qualcomm Incorporated Beam failure detection reference signal for a secondary cell
CN114503491A (zh) * 2019-10-04 2022-05-13 高通股份有限公司 用于辅小区的波束故障检测参考信号
US11903071B2 (en) 2019-10-04 2024-02-13 Qualcomm Incorporated Beam failure recovery and related timing determination techniques
US11395247B2 (en) 2019-11-29 2022-07-19 FG Innovation Company Limited Method of monitoring paging occasions and related device
WO2021104520A1 (fr) * 2019-11-29 2021-06-03 FG Innovation Company Limited Procédé de surveillance d'occasions de radiomessagerie, et dispositif associé
CN116548038A (zh) * 2020-10-30 2023-08-04 高通股份有限公司 多发送接收点（trp）操作期间的波束恢复
WO2023131933A1 (fr) * 2022-01-10 2023-07-13 Guangdong Oppo Mobile Telecommunications Corp., Ltd. Procédés et appareil de rétablissement de liaison basé sur l'apprentissage automatique

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US20180302889A1 (en) 2018-10-18
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